Installation and Operating Instructions - Sky Eyeskyeye.ca/wp-content/uploads/2013/11/Drexelbrook-Universal-III-Manual.pdf · Installation and Operating Instructions Series 509-7X

A Leader inLevel Measurement

For Assistance Call 1-800-527-6297Outside North America + 215-674-1234

Installation andOperating Instructions

Series 509-7XUniversal III Transmitterwith HART® Protocol

using 409-1000 Electronics

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AMETEK Drexelbrook makes no warranty of any kind with regard to the material containedin this manual, including, but not limited to, implied warranties or fitness for a particularpurpose. Drexelbrook shall not be liable for errors contained herein or for incidental orconsequential damages in connection with the performance or use of material.

Copyright 2003 AMETEK Drexelbrook

Series 509-7XUniversal III Transmitterwith HART® Protocol

using 409-1000 Electronics

EDO# 1-03-242409-1000-LM

205 Keith Valley Road Horsham, PA 19044US Sales 1-800-553-909224 Hour Service 1-800-527-6297International + 215-674-1234Fax + 215-674-2731E-mail [email protected] www.drexelbrook.comAn ISO 9001 Certified Company

DREXELBROOK

Table of ContentsSECTION 1 INTRODUCTION .........................................................................................................11.1 System Description ....................................................................................................................11.2 Technology .................................................................................................................................11.3 Models Available.........................................................................................................................21.4 Classifications ............................................................................................................................2

SECTION 2 INSTALLATION ............................................................................................................42.1 Unpacking ..................................................................................................................................42.2 Mounting Electronic Unit ............................................................................................................4

Common Installation Mistakes ...................................................................................................7Installing in Agitated Vessel ........................................................................................................8Physical Grounding of Sensing Element ....................................................................................9

2.3 Wiring Electronic Unit ...............................................................................................................102.4 Wiring Sensing Element ...........................................................................................................122.5 Spark (Static Electricity) Protection ........................................................................................132.6 Surge Voltage (Lightning) Protection ........................................................................................152.7 RFI (Radio Frequency Interference)Filters ...............................................................................152.8 Electrostatic Filters ...................................................................................................................172.9 Integral Digital Meter .................................................................................................................18

SECTION 3 CONFIGURATION AND CALIBRATION WITH DREXELBROOKLAPTOP SOFTWARE (Green Page) ...............................................................................................193.1 General Description .................................................................................................................193.2 Model Number ..........................................................................................................................193.3 System Requirements ..............................................................................................................203.4 Installing Modem.......................................................................................................................213.5 Installing Software on Hard Drive .............................................................................................213.6 Description of Function Keys ...................................................................................................233.7 Configuration ............................................................................................................................24

3.7.1 Level Configuration ..........................................................................................................243.7.2 Vessel Configuration........................................................................................................253.7.3 Lower and Upper Range Values (LRV and URV) ............................................................26

3.8 Calibration ................................................................................................................................263.8.1 Point Calibration ...............................................................................................................293.8.2 Level Calibration ..............................................................................................................293.8.3 Application Example ........................................................................................................30

3.9 PC Status Messages ...............................................................................................................323.10 Set D/A Trim .............................................................................................................................333.11 Strapping Table .........................................................................................................................343.12 Digital Integral Meter Configuration ..........................................................................................353.13 Save/Print Entries ....................................................................................................................363.14 Validation ..................................................................................................................................37

3.14.1 Design Concept ............................................................................................................373.14.2 Procedures ...................................................................................................................383.14.3 Results (Print-out) ........................................................................................................39

EDO# 1-03-242409-1000-LM

Table of Contents (continued)

SECTION 4 CONFIGURATION AND CALIBRATION with ROSEMOUNT Model 275with DREXELBROOK Device Description (Pink Page) .......................................................40

4.1 Drexelbrook Device Description .............................................................................................. 404.2 Start-up ....................................................................................................................................414.3 Configuration ............................................................................................................................424.4 Calibration ................................................................................................................................43

4.4.1 Point Calibration ...............................................................................................................444.4.2 CapacitanceCalibration ...................................................................................................454.4.3 D/A Trim ...........................................................................................................................464.4.4 Strapping Table ................................................................................................................47

SECTION 5 TROUBLESHOOTING ...............................................................................................485.1 Identifying a Problem/Symptom ................................................................................................485.2 Troubleshooting Loop Connection ............................................................................................515.3 Rosemount Model 268 or 275Calibrator cannot identify or find device ....................................525.4 Rosemount Model 275 Calibrator with device description cannot identify or

find device ................................................................................................................................525.5 Universal III transmitter does not communicate with Drexelbrook laptop software ..................535.6 Troubleshooting Transmitter ......................................................................................................54

5.6.1 Transmitter Drift Test ........................................................................................................565.7 Troubleshooting Sensing Element ............................................................................................565.8 Troubleshooting Coaxial Cable .................................................................................................585.9 Static Electricity .......................................................................................................................595.10 Radio Frequency Interference ..................................................................................................595.11 Factory Assistance ..................................................................................................................615.12 Field Service ............................................................................................................................615.13 Customer Training.....................................................................................................................615.14 Equipment Return....................................................................................................................62

SECTION 6 SPECIFICATIONS ......................................................................................................636.1 Transmitter Specifications ........................................................................................................636.2 Coaxial Cable Specifications ....................................................................................................64

APPENDIX A CONFIGURATION AND CALIBRATION with ROSEMOUNT Model 275without DREXELBROOK Device Description (Blue Page) ...............................................A-1

A.1 Range/Span Control ............................................................................................................... A-1A.2 Basic Rules of HART Software .............................................................................................. A-2A.3 Tag ID ..................................................................................................................................... A-2A.4 Set Up Procedures ................................................................................................................. A-2A.5 Reading Input and Output ...................................................................................................... A-6A.6 Calibration Using Actual Tank level ........................................................................................ A-7A.7 Bench Calibration (if needed) ................................................................................................. A-7A.8 Point Calibration ..................................................................................................................... A-7A.8.1 Fine Tuning Calibration ........................................................................................................... A-7A.8.2 Selecting Engineering Units ................................................................................................... A-7

APPENDIX B APPROVAL DRAWINGS ......................................................................................B-1B.1 FM/CSA.................................................................................................................................. B-1B.2 KEMA ..................................................................................................................................... B-5

509-7X Series Universal III TransmitterTM

1

The instructions in this manual are for the AMETEK Drexelbrook509-7X-XXX Series Universal III™ for level measurementin liquids, slurries, interfaces and granulars.

Each AMETEK Drexelbrook 509-7X-XXX system consists of aUniversal III™ (409-1000) series two-wire, 4-20 mA elec-tronic unit and a 700 series sensing element (probe). A 380series connecting cable is also supplied for connection of thesensing element to the electronic unit.

The 509-7X-XXX is an admittance-to-current transducer. Achange in level produces a change in admittance whichresults in a change of current. It is termed a two-wire trans-mitter because the same two wires that are used to powerthe unit also indicate the change in level (4-20 mA).

SECTION 1INTRODUCTION

1.1 SystemDescription

1.2 Technology In a simple capacitance probe, when the level rises and material covers the sensing element, the capacitance within the circuit between the probe and the medium (conductive applications) or the probe and the vessel wall (insulating applications) increases. This is due to the dielectric constant (k) of the material, which causes a bridge misbalance. The signal is demodulated (rectified), amplified and the output is increased. There are drawbacks, however, especially when there is coating of the probe.

An RF Admittance level transmitter is the next generation. Although similar to the capacitance concept, Universal III™ employs a radio frequency signal and adds the Cote-Shield™ circuitry within the Electronics Unit.

Built-in oscillator buffer and chopper drive circuits permit separate measurement of resistance and capacitance. Since the resistance and the capacitance of any coating are of equal magnitude (by physical laws), the error generated by a coating can be measured and subtracted from the total output.

This patented Cote-Shield™ circuitryis designed into Universal III™ seriesand enables the instrument to ignorethe effect of buildup or material coat-ing on the sensing element. The sens-ing element is mounted in the vesseland provides a change in RF admit-tance indicating presence of material.

The Cote-Shield™ element of thesensor prevents the transmission ofRF current through the coating on thesensing element. The only path toground available for the RF current isthrough the material being measured.

The result is an accurate measurementregardless of the amount of coating onthe probe, making it by far the mostversatile technology, good for verywide range conditions from cryogenicsto high temperature, from vacuum to10,000psi pressure, and works with alltypes of materials.

Figure 1-1Simple Capacitance Probe

(Insulating Media Shown)

Figure 1-2RF Admittance Probe with Cote-Shield

k

k air

Ad

C k media

C = k Ad

C =k Ad

A k air

d

C

kmedia

Probe RodTeflon Insulation

Coating

Little to No Resistance

High Resistance

TankWall

Oscillator circuitry through phase shiftcancels small amounts of RF current flow (both Resistive and Capacitive) caused by Coating

Xc

R

R

Xc

Sensor:

[MoreCoatingactuallyeasier toignore!]


2

System Model Number is 509-007X-XXX. Electronic Unitmodel number is 409-10XX. Sensing Element is 700-X-XX.

5 0 9 - 0 0 7 X - X X X Universal III System

Application: Sensing Element5 = conductive liquids Reference Number:6 = interface See Table 1-17 = insulating liquids9 = granular solids Package:

7 = Remote9 = Integral

4 0 9 - 1 0 X 0 - X X X Universal III Electronic Unit

Type: Housing:0 = insulating or 1 = Chassis Only

conducting 4 = Remote Type 4 Xmaterial Explosionproof

3 = coating material 6 = Remote Type 4XExplosionproof with Drexelcote

Agency Approvals: 7 = Type 4X FiberglassF = FM 8 = Integral Type 4XC = CSA Explosionproof with DrexelcoteK = KEMA 9 =Integral Type 4XO = All above Explosionproof

Frequency:0 = 100 KHz1 = 15 KHz

The standard electronic unit in a Type 4X housing (409-10XX-XX7) meets the following classifications:

••••• Type 4X Waterproof/Corrosion Resistant.

The standard electronic unit mounted in the explosionproofhousing (409-10XX-XX4) is dual-rated and meets the follow-ing conditions:

••••• Type 4X Waterproof/Corrosion Resistant

••••• Type 7 Explosionproof FM Approved for CI.I Gr. A,B,C & D, CI.II Gr. E, F, & G CI. III.

See Table 1-1 for detailed specifications of sensing elementsthat are most often recommended with a 509-7X-XXX system.Contact the factory or your local representative if additionalinformation is required.

The electronic unit and sensing element are connected by athree-terminal coaxial cable. Drexelbrook cables are avail-able in:

••••• General Purpose: 380-XXX-12••••• High Temperature: 380-XXX-11••••• Composite: 380-XXX-18

(first 10 feet high temperature)

The XXX in the model number indicates the length of thecable in feet. 25 feet is standard (e.g., 380-025-12). Longerand shorter lengths are available. Cable can also be pur-chased in bulk lengths with termination kits. Consult factoryfor maximum recommended lengths per specific application.

1.3 Models Available

1.4 Clasifications


3

Sensing Typical Sensing Standard OD and Temperature &Element Application Element Material of Standard Pressure LimitsReference Type Model Construction MountingNumber

509-

0075-X09 Water-like 700-1-22 TFE-covered Rod 3/8" OD 100oF @ 1000 PSIconductive rod 3/4" NPT 300oF @ 500 PSIliquids

0077-X06 Concentric 700-1-24 TFE-covered Concentric 100oF @ 1000 PSIwater-like rod with carbon Shield 300oF @ 500 PSIinsulating steel concentric 1.66" ODliquids shield 1 1/2" NPT

0075-X07 Low viscosity 700-2-24 TFE-covered Rod 3/4" OD 100oF @ 1000 PSIconducting rod 3/4" NPT 450oF @ 500 PSIliquids

0076-X02 Interface 700-2-27 FEP-covered Rod 100oF @ 1000 PSIof liquids rodcontaining .56" OD 300oF @ 500 PSIketones 3/4" NPTand esters

0075-X05 Thick 700-2-37 “X”*-covered Rod 100oF @ 1000 PSIconducting rod .54" OD 250oF @ 500 PSIliquids 3/4" NPT

0075-X06 Conducting 700-2-57 “X”*-covered Rod 100oF @ 1000 PSIliquids and rod .84" OD 250oF @ 500 PSIinterfaces 1" NPT

0079-X20 Agitated 700-5-18 “X”*-covered Cable 100oF @ 1000 PSIconducting cable 5/16" OD 250oF @ 500 PSIliquids and 3/4" NPTgranulars

0079-X09 Heavy-duty 700-5-19 Urethane-covered Cable 150oF @ 5 PSIfor abrasive cable 3/4" ODgranulars 2" NPT

0077-X25 Long lengths 700-5-54 PFA-covered Cable 100oF @ 1000 PSIof conducting cable .093" OD 300oF @ 500 PSIliquids 3/4" NPT

0079-701 Insulating 700-205-78 “X”* covered Cable 250oF @ 5 PSI0077-714 liquids and cable 5/16" OD

granulars 1" NPT

*“X” is a fluorocarbon-type insulation

Table 1-1Sensing ElementModel Numbering


4

SECTION 2INSTALLATION

2.1 Unpacking

2.2 MountingElectronic Unit

Carefully remove the contents of the carton and checkeach item against the packing list before destroying anypacking material. If there is any shortage or damage,report it immediately to the factory.

The Universal IIITM (409-1000) Series system was de-signed for field mounting, but it should be mounted in alocation as free as possible from vibration, corrosiveatmospheres, and any possibility of mechanical damage.For convenience at start-up, mount the instrument in areasonably accessible location. Ambient temperaturesshould be between –40°F and 185°F (–40°C and 85°C).

NOTE:When installing conduit to the electronic unit,be sure that vertical conduit runs will not causewater to enter the electronic unit housing, asshown in Figure 2-1.

Figure 2-1 shows the recommended conduit installation.See Figure 2-2 for dimensions when installing conduit tothe electronic unit.

Figure 2-1Recommended Conduit Connection

WRONG CORRECTCONDUIT

BREATHERDRAIN

WRONG CORRECT

* *

Allows Moisture Infiltration Use only cable supplied byAMETEK Drexelbrook

All conduit connections are sealed. Gaskets are in place.

Fill Pipe Ends with silicone sealant.

*

NOTE:For electronic units withdisplay option, the meterdisplay can be rotated to theproper viewing orientationafter installation. Refer toSection 2.16 for instructions.

NOTICE

NOTICE

NOTEAlways install to NEC®

and/or local requirements/codes/directives as mandatedby the authority havingjurisdiction.

NOTECable fittings supplied areweather-resistant. They areNOT certified as explosionproof(XP) or flameproof (d) unlessthey are specifically marked.

NOTICE

NOTICE


5

Figure 2-2Mounting Dimensions

2.2 MountingElectronic Unit(continued)


6


The mounting location for the sensing element (probe) isoften determined by whether there is a suitable locationinside a vessel. An external side arm or stilling well canbe considered.

The following sensing element mounting and installationinstructions should be followed so that the equipmentwill operate properly and accurately:

A. In applications requiring an insulated sensingelement, use particular care during installation.There is always the danger of puncturing theinsulation, especially with the thin-walled probes.

B. Sensing elements should be mounted in such amanner that they are not in the direct stream of afilling nozzle or chute. If this is not possible, a de-flecting baffle should be installed between the probeand the fill.

C. Do not take the sensing element apart orloosen the packing glands. Follow instructions inFigure 2-3.

Figure 2-3Installing Sensing Element

NOTICE


7

D. Avoid installing the sensing element with any of thecommon mistakes shown in Figure 2-4.

E. If a stilling well is used, ensure that "vent" holes arelarge enough to allow free passage of both air andprocess material. Holes should be 5/8" or larger, 120o

apart, every 2-3 feet along the length of the stillingwell.

Figure 2-4Common Installation Mistakes



8

F. Sensing elements that are mounted in agitated vesselsusually require brackets and supports to control theposition of the sensor during agitation. See Figure 2-5.


Figure 2-5Installing Sensing Element

in Agitated Vessel


9

G. For non-metallic vessels without Drexelbrook self-grounding sensing elements, choose one of the ground-ing recommendations shown in Figure 2-6.


Figure 2-6Providing Ground Reference*

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10

2.3 WiringElectronic Unit

Integral units are pre-wired at the factory. Figure 2-7shows the wiring of the integral unit.

For remote units, the signal connections are made to thethree-terminal block on the front of the chassis. Due to thelow power consumption of the instrument, the wiring needonly be light gauge (e.g. 20 AWG). Twisted shielded paircables are recommended for lengths over 200 feet.

The cable from the sensing element is connected to thefour-terminal strip on the back side of the instrumentchassis. The cable connections are probe (PRB) or CenterWire(CW), ground (GND), and shield (SHD). See Figure 2-8 forwiring connections of the remote unit.

Figure 2-7Universal III Wiring Connections

Integral Mounting


11

Figure 2-8Universal III Wiring Connections

Remote Mounting

2.3 WiringElectronic Unit(continued)


12

Only coaxial cables supplied by Drexelbrook EngineeringCompany should be used to connect the transmitter to thesensing element. Use of other cables can result in unstablecalibration.

CAUTIONBefore using Intrinsic Safety Barriers, readmanufacturer's instruction for barrier operation.

The 409-1000 has a built-in current limiter which holds thesignal current to a maximum of 28 mA.

The cable connections to the sensing element are shown inFigures 2-9 and 2-10.

••••• Do not connect the cable to the sensing element untilafter the sensing element has been installed in the ves-sel and the condulet housing has been secured.

••••• If the sensing element does not have a shield connection,(the most common condition for a 2-terminal sensing

element) be sure to clip and /or tape the shield wire at the sensing element end of the cable only. See Figure 2-9.

2.4 WiringSensing Element

Figure 2-9Three-Terminal Cable Connectionsto Two-Terminal Sensing Element

Figure 2-10Three-Terminal Cable Connectionsto Three-Terminal Sensing Element

NOTE:Clipped Shield wire on two-wire

versions must NOT touch housing.

NOTICE

NOTICE


13

2.5 Spark (Static Electricity)Protection

—Spark Protection for Integral Sensing ElementsIf spark protection is supplied for an integral sensingelement, use the following instructions for installing thespark protection.

A. Attach the mounting link on the spark protector to thesensing element center connection screw.

B. Connect the green wire from the spark protector to thehousing/chassis mounting screw.

C. Connect the center wire connector (blue wire) of thespark protector to the "probe" connection on thetransmitter.

D. Connect the shield connector (orange wire) of the sparkprotector to the shield (SH)* connector on the transmitter.

*For sensing elements that do not have shield connections, clip the shield wire as shown in Figure 2-9.

Figure 2-11Spark Protection for Integral Sensing Elements

NOTEMake sure that transmitter hasa ground attached either onsensing element side or loopside of the unit. Unless as-sembly is attached to ametalic vessal, chassis oftransmitter is not grounded.

NOTICE


14

—Spark Protection for Remote Sensing ElementsIf spark protection is supplied for a remote sensing ele-ment, use the following instructions for installing thespark protection.

A. Attach the mounting link on the spark protector to thesensing element center connection screw.

B. Connect the green wire from the spark protector to theground screw.

C. Feed the coax cable into the condulet.

D. Connect the coax cable center wire (CW) to the sparkprotector and the ground wire (GND) to the groundscrew as shown in Figure 2-12.

E. Connect the shield wire to the Cote-Shield terminal (SH).*

*For sensing elements that do not have shield connections, clip the shield wire as shown in Figure 2-9.

2.5 Spark (Static Electricity)Protection(continued)

Figure 2-12Spark Protection for Remote Sensing Elements

NOTE:Clipped Shield wire ontwo-wire versions must

NOT touch housing.

NOTICE


15

Optional surge protection is sometimes supplied withtransmitters that are expected to be exposed to surges orlightning on the two-wire loop. A Drexelbrook Model377-4-12 Surge Voltage Protection affords a great deal ofprotection to the transmitter but is not absolute in itsprotection against a very close lightning strike. Refer toFigure 2-13 to properly connect the Surge Voltage Protec-tion. Be sure that in addition, the transmitter housing iswell connected to a good ground.

When installing the Universal III transmitter, follow theserecommendations to avoid problems with Radio FrequencyInterference (RFI).

••••• Choose a location to mount the electronic unit at least 6feet (2M) from a walkway where personnel using walkietalkies may pass.

••••• If the vessel is non-metallic, select if possible, a shielded(concentric) sensor. If unsure about suitability, contactthe Drexelbrook Applications department for a recom-mendation.

••••• For remotely-mounted electronic units connect thesensor to the electronic unit by placing the coaxial cablein grounded metal conduit. Integrally mounted elec-tronic unit sensor connections are already shielded.

2.6 Surge Voltage(Lightning)Protection

2.7 RFI (Radio FrequencyInterference) Filters

Figure 2-13Surge Voltage Protection


16

2.7 RFI (Radio FrequencyInterference) Filters(continued)

••••• Use Twisted Shielded Pair wiring for all loop wiringconnections. Loop connection wiring should also be ingrounded metallic conduit.

••••• Where possible, use of cast aluminum housings withoutwindowed openings for the electronic unit is recom-mended. If local close-coupled indicators are used, installa loop filter between the indicator and the electronicunit.

Ground the electronic unit and housing with a minimum of14 gauge wire to a good earth ground. Make sure thatconduits entering and leaving the housing have a goodelectrical ground connection to the housing

If the recommendations listed above are followed it isusually not necessary to add RFI filtering to protectagainst signal strengths of 10 Volts/ Meter or less. Thisdegree of protection is usually sufficient to protect againstwalkie talkies that are used 3 feet (1M) or more from atypical electronic unit. If greater protection is required, orfilters have already been provided, install RFI filters asshown in Figure 2-14.

Figure 2-14Radio Frequency Interference (RFI) Filters

NOTERemote systems require aprobe (only) RFI filter to beinstalled in accordancewithFigure 2-14 to maintainCE Mark certification.

NOTICE


17

In applications such as desalters or treaters and othercoalescers with electrostatic grids, it is customary forDrexelbrook to supply a special filter on the sensing ele-ment. The purpose of the filter is to remove voltage thatmay be imposed in the sensor from the high voltage grids.Some earlier applications have the filter located at thetransmitter instead of the sensing element; either is accept-able.

Connect the electrostatic filter Drexelbrook Part Number385-0028-004 as shown in Figure 2-15.

2.8 ElectrostaticFilters

Figure 2-15Electrostatic Filter (385-0028-004)


18

2.9 Digital IntegralMeter

An optional digital integral meter (DIM) (401-44-1) can beused with the Universal III electronic unit for local digitalloop indication. When purchased with the Universal IIIinstrument, a housing with viewport is supplied. The meterdisplay is visble through the viewport. If the meter is addedas a retrofit to an existing installation, a new housing domewith viewport (260-2-222) is required and supplied as partof the retrofit package.

To install the meter:••••• remove the top label from the transmitter to expose two

threaded holes and ribbon cable socket,••••• plug the mini ribbon cable into the socket,••••• secure meter to top of electronic unit with screws.

Integral meter can be rotated 90° to allow for proper view-ing orientation:••••• remove hold-down screws.••••• remove black cover screws.••••• move cover screws to original hold-down screw location.••••• remount meter in new orientation.

The meter is not inserted into the 4-20 mA loop. It receivespower and data directly from the Drexelbrook smart trans-mitter via attached mini ribbon cable. See Figure 2-16.

When a smart transmitter is powered down or the ribboncable is disconnected, there is a 1 minute delay before theDIM begins to display.

The meter is configured using either the Drexelbrook PCsoftware (F2-System) or via the Model 275 Calibrator.

Figure 2-16Digital Meter in Housing

with Viewport

Calibration With

Drexelbrook PC Software


19

This section instructs the user how to use the Drexelbrook401-700-20 Series PC calibrator software to configure andcalibrate the Universal IIITM Series 509-7X (RF Admit-tance) Transmitter.

The 401-700-20 software package allows the use of anyWindows® 9X/NT/2000/XP-based personal, laptop, ornotebook computer to calibrate the HART Protocol trans-mitter.

The PC software can be used in place of the Rosemount268 or 275 handheld calibrators used for multi-ProcessVariable (PV) transmitters.

4 0 1 - 0 7 0 0 - 0 2 X

X=1 PC Software Package includes ModemAssembly shown in Figure 3-1 and cable.

X=2 PC Software Package includes ModemAssembly shown in Figure 3-1, cable, andand three software 3½-inch floppy disks forWindows® software HARTWin version 2.1.

4 0 1 - 0 7 0 0 - 0 0 6Programmed Disk Software 3½-inch disks only (three disks).

SECTION 3

CONFIGURATIONAND CALIBRATIONWITH DREXELBROOKPC SOFTWARE

3.1 General Description

3.2 Model Number


20

—PC RequirementsWindows 95, Windows NT, Windows 2000, Windows XP. Itis recommended that the software be installed on a harddrive with 0.5 megabytes or more of space available.

—Input to ModemRS232 from one of the COM serial ports (COM1, COM2,etc.). The PC provides operating power for the modem butnot for the transmitter.

—Output (to Transmitter being Calibrated)4-20 mA in HART Protocol

—Cable (included with Modem)5-foot modem to transmitter loop connection

3.3 SystemRequirements

Figure 3-1Modem Assembly & Loop Connection


21

Refer to Figure 3-1 for a connection diagram and use thefollowing procedure to install the hardware that is neces-sary to run the PC software.

a. Connect the Drexelbrook Modem 401-700-002 toone of the serial ports (COM1, COM2, etc.) of the

computer.

b. Connect the 4-20 loop connectors to the transmitterloop. Modem is polarity insensitive.

c. Connect the loop wires to the modem.

d. Turn on the computer.

Installation is quite simple.

a. Place the 401-700-031 software Disk 1 into the diskdrive (usually drive a:).

b. Double-click My Computer 3½ Floppy (A:)

c. Follow screen instructions in Setup to createprogram file.

d. Double click icon and the program should run

under its own window.

e. Select communication port [Com 1Com 2etc.],and then click “.”

3.4 Installing Modem

3.5 Install the Windows Version HARTWin 2.1 Software on Hard Drive

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Figure 3-2aSelecting COM ports

during software instalation


22

f. If you are not sure which communication port you are using, select “Search Ports,” then OK. The soft-

ware automatically will seek out the correct one.

In either case the software begins to communicatewith the HART protocol transmitter and returns witha view (below) containing “name plate data,” Tag IDand all default or existing configuration information.This is the same as if you clicked on the Read Trans-mitter function button

g. The next view, shown in Figure 3-3, appears automati-cally, displaying current transmitter database for cali-bration set-up for your selected Tag ID. The ScratchPad will automatically show the last message, whichcan be where the last user can identify himself orherself and when the previous calibration occurred. Ifthis is a new transmitter, the Tag ID is user defined.Serial number, transmitter software version, range, etc.is automaticallyentered from the “name plate data”embedded in thetransmitter:

3.5 Install software (continued)

Figure 3-3PC Software Menu Screen automatically communicates

all "name plate data" from transmitter

(

)

*

Figure 3-2bSelecting COM ports

during software instalation

"

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!


23

Figure 3-3 shows a PC calibration software menu screen.The following paragraphs describe the function buttons.The data fields are described in Section 3.7 ConfiguringUniversal III Transmitter.

Read Transmitter [also F3 on keyboard]Reads all pertinent data from the transmitter and displaysit on the screen. The Read function also updates the realtime window.Keep in mind that it takes several seconds toload the information from the transmitter. When the loadis complete, the screen shows the data-base parameters, except any user-defined strappingtable information. This is also used when connecting toanother transmitter.

Write to Transmitter [also F5 on keyboard]Sends new or edited configuration data to the transmitter.Data field that has been edited but not sent to the trans-mitter is displayed in red.

Real Time View [also F4 on keyboard]Displays the real time values of level, capacity, distance,temperature, loop current, percentage, and status.

Point Calibration [also F6 on keyboard]Calibrates the HART® protocol transmitter using Pointcalibration. See Section 3.8 Calibration. Enter the lowpoint and high point of level for an accurate calibration.

D/A TrimAllows a field reference meter to be connected to the trans-mitter for adjusting transmitter output current.See Section 3.9.

Strapping TableDisplays the values of the input to level and output tovolume in percent in a 21-point table. Allows points to bechanged to accomodate irregularly shaped vessels.See Section 3.10.

Configure MeterConfigures the optional Digital Integral Meter (440-44-1)used for local indication. See Section 3.11.

True Level Calibration (grayed out)This button is inactive for the Universal III Transmitter.It is for the extra features that come with the True Levelmodel transmitter.

3.6 Description ofFunction Keys


24

Refer to Figure 3-3 PC Sofware Menu Screen.

••••• Configuration involves downloading information tothe HART protocol transmitter that is specific to theapplication and vessel that is being measured.

••••• Calibration requires that application informationand two points of level and/or capacitance besupplied to the transmitter from the calibrationsoftware.

a. Begin configuration by using Tag ID (8 characters)to identify the unit or vessel. Use the

Scratchpad (32 characters) to record the date of cali bration or other similar notes. Press Tab or Enter on your keyboard.

b. Select Level or Vessel in the Analog Loop Assignselection box. Press Tab or Enter on your keyboard.

••••• Level configuration sets the output to followthe level of the material being measured.

••••• Vessel configuration sets the output to followthe strapped level of the vessel. For example, gallonsin a horizontal vessel.

c. Edit Damping Time from 0-90 seconds, if desired.

d. Click on Write to Transmitter.

e. Move to Level Configuration section of menu.

a. Select . The default is feet. Choose the unitsthat correspond to the level measurement.

b. Edit the to agree with the actualtank height (not the length of the sensing element).

c. Click on Write to Transmitter and move to the VesselConfiguration section of the menu.

3.7 Configuration

3.7.1 LevelConfiguration

Figure 3-4Configure Transmitter

from Menu screen

Figure 3-5Level Configurationfrom Menu screen


25

a. Select Vessel Units. The default is gallons. PressEnter and choose the units that correspond to thevessel measurement. The units include both weightand volume outputs. Press Tab or Enter on your keyboard to continue.

b. Edit the Maximum Capacity of the vessel. Enter thecorresponding value of weight or volume equal to theMaximum Level. Enter 100 for percent if the weightor volume units are not known or needed. Press Tab orEnter on your keyboard to continue.

c. Select Vessel Type. Available options include:••••• Vertical Tank (VERTICAL)••••• Horizontal cylinder with flat ends (HRZCY/FL)••••• Horizontal cylinder with dished ends (HRZCY/DS)••••• Horizontal cylinder with hemispherical ends(HRZCY/HM)••••• Spherical (SPHERE)

The default is Vertical. Press Enter and choose thetype of vessel.

c. Click on Write to Transmitter.

d. Move on to Range Values (URV & LRV) section of menu.

3.7.2 VesselConfiguration

Figure 3-6Vessel Configuration

from Menu screen


26

Enter the LRV and URV to set the current (mA) window ofthe vessel.

a. Edit LRV (Lower Range Value) to display the out-put you want to see when the transmitter gene-rates 4 mA current. The default LRV is 0 feet.

b. Edit URV (Upper Range Value) to display the out-put you want to see when the transmitter gene-rates 20 mA current. The default URV is 100 feet(450 pF) for Universal III.

c. Click on Write to Transmitter.

Configuration is now complete.

There are two methods for calibrating the transmitterusing the PC software:

Point Calibration (Click on menu screen "button" for window) orLevel Calibration (on menu screen).

3.7.3 Lower and UpperRange Values(LRV and URV)

3.8 Calibration

Figure 3-7LRV & URV Configuration

from Menu screen

Figure 3-8Point & Level Calibration

from Menu screen


27

Point Calibration uses the two known level points in thevessel for calibration. The further apart the two points arefor the calibration, then the better the accuracy of theoverall measurement. Point calibration should always bedone using the pop-up window from selecting the PointCalibration "button" on the PC menu screen.

Level Calibration uses capacitance values obtained fromthe AMETEK Drexelbrook Service department (or a previ-ous calibration or identical application) for the zero andspan calibration data. Call 1-800-527-6297. Please provideyour DE purchase order number, transmitter serial num-ber, vessel and application data to the Service Engineer.Level calibration is done using the Level Calibration datafields on the PC menu screen.

It is permissible or sometimes even recommended thatboth methods be used in order to establish a calibrationstandard. For example, if the vessel was already filledbefore the calibration was attempted and it is difficult orimpossible to lower the level to establish the second point,it would be best to use a calculated zero capacitance for thelow point and actual level for the high point. While thiswouldn’t be as accurate as two known level points, it will bereasonably accurate until an actual low point calibrationcan be established. The Service department will help incalculating high or low capacitance values.

Because calibration involves determining two knownpoints of capacitance, a span (or range) jumper provides anadjustment for the change in capacitance required toproduce full scale current.

••••• The Range Span Jumper is located on the side of thetransmitter chassis.

••••• Each Range Span position on the Universal III ad-vances the range in inches or feet to approximately fivetimes the previous setting.

Table 3-1 (next page) is provided for reference, and pro-vides the span range position for a number of commonsensing elements.

3.8 Calibration(continued)

NOTE:

May use both Point &Level Calibrations

NOTICE

Figure 3-9Range Span Jumpers


28

UNIVERSAL III SPAN RANGE SETTING CHARTPROBE LENGTH vs. SPAN POSITION NUMBER/MAXIMUM pF

Jumper Position = 1 2 3 4 5 6 Maximum pF = 20 100 450 2000 10000 45000

SYSTEM # SENSOR # MAXIMUM PROBE LENGTH IN FEET

CONDUCTING LIQUIDS:509-75-X09 700-1-22 N/A N/A 5.4 20 N/A N/A509-75-X25 700-5-54 N/A N/A 9.2 40 200 920509-75-X06 700-2-57 N/A N/A 1.2 5.3 20 N/A509-75-X13 700-5-18 N/A N/A 1.4 6.25 31 140509-75-X07 700-2-24 N/A N/A 7.8 20 N/A N/A509-75-X05 700-2-37 N/A N/A N/A N/A 4.1 14509-77-X06 700-1-24 N/A N/A 5.4 20 N/A N/A509-75-X30 700-1-62 N/A N/A 5.4 20 N/A N/A509-75-724 700-5-29 N/A N/A N/A 4.2 21 95

INTERFACE APPLICATION:509-76-X06 700-2-57 N/A N/A 1.2 5.3 20 N/A509-76-X02 700-2-27 N/A N/A 1.0 4.8 20 N/A509-76-X04 700-2-37 N/A N/A N/A N/A 4.0 14

INSULATING K = 1.5-5:509-77-X06 700-1-24 N/A 2.7 12.5 20 N/A N/A

700-1-22 N/A 8.3 20 N/A N/A N/A700-5-54 N/A 8.0 37.5 166 N/A N/A700-2-57 N/A 3.6 16.2 20 N/A N/A700-5-18 N/A 3.8 17.1 76 N/A N/A700-2-24 N/A 6.0 20 N/A N/A N/A700-2-27 N/A 5.0 20 N/A N/A N/A700-2-37 N/A 5.0 14 N/A N/A N/A

Table 3-1Universal III Span Range Table



29

3.8.1 Point Calibration

3.8.2 Level Calibration

The Point to Point method of calibration is the most accurateway to calibrate the transmitter with two level points. Thehigh or low level must be known and should be held steadyfor accurate calibration. They may be any two points at morethan 10% apart, and need not be the 4mA or 20 mA points.

The Point Calibration pop-up window is accessed by click-ing on the menu "button" Point Calibration. Either a highpoint or a low point can be entered first.

a. Type in current value asthe high point of the two pointcalibration.

b. Click on Hi Point or press Enter (or Tab) on keyboard.High point calibration is now complete.

b. Move level in vessel a minimum of 10%.

c. Type in that value for Low Point of the two point calibration.

d. Click on Low Point or press Enter (or Tab) on keyboard.Low point calibration is now complete.

Level calibration uses zero and span capacitance values asthe calibration data . These values can be obtained fromthe AMETEK Drexelbrook Service department (or from aprevious calibration or from an identical application).Please be prepared when you call (1-800-527-6297) withthe purchase order number and the serial number of thetransmitter.

a. Go to Level Calibration area of the menu.

b. Enter Lower Level value. Press Tab or Enter.

c. Enter Lower Capacitance value. Press Tab or Enter.

d. Enter Upper Level value. Press Tab or Enter.

e. Enter Upper Capacitance value. Press Tab or Enter.

f. Click on Write to Transmitter.

Figure 3-10Point Calibration pop-up

window from Menu screen

Figure 3-11Level Calibration area

of Menu screen

Measure Level


30

Example of an application using the PC software.

—Application Data

••••• Vertical Tank

••••• No Damping

••••• Caustic or Acid Material in Tank Sensing Element: 700-5-54

••••• Span Range Switch factory set to 4

••••• Maximum Capacity of Vessel = 1200 gallons

••••• Maximum Size of Vessel = 20 feet

••••• 4 mA (LRV) = 0 gallons••••• 20 mA (URV) = 1185 gallons [19.5 feet]

••••• Point Cal was done using two known level points:••••• Lo Cal = 3 feet [selected level]••••• Hi Cal = 16 feet [current level]

3.8.3 ApplicationExample

Figure 3-12Application Example Diagram

LRV 4 mA Point

LRV Alternate*

Low Point3 feetLo Cal

High Point16 feetHi Cal

URV = 1185 gallons 20 mA

Maximum Level 20 feet Maximum Capacity 1200 gallons

*LRV may either reference the bottom of the vessel, bottom of the sensor, or an elevated point on the sensor.

[19.5 feet]

[0 feet]


31

3.8.3 ApplicationExample (continued)

Figure 3-13PC Software Menu Screen View of Application Example


32

Status Message: SPAN TOO SMALLDifference between URV and LRV is less than 10% of range.

Example: For 0 to 10 foot calibration points: LRV=3.0 feetand URV=3.8 feet. When calibration points are too closetogether, overall accuracy of calibration is adversely affected.

Action: The calibration points should be farther apart.____________________________________________________________________________________________

Calibration Status Message: RAISE SPAN JUMPERBased on LRV, URV, and capacitance calibration data, estimated100% capacitance exceeds selected range by greater than 10%.

Example: A unit in Range 4 (600 pF) projects maximumcapacitance equal to 900 pF. Error message is displayed.

Action: Raise Range jumper (Section 3.8, Table 3-1) to position 5 for this example.

___________________________________________________________________________________________

Calibration Status Message: LOWER SPAN JUMPERBased on LRV, URV, and capacitance calibration data, estimated100% capacitance exceeds selected range by less than 10%.

Example: A unit in Range Span 4 (600 pF) projects maxi-mum capacitance equal to 400 pF.

Action: Lower Range jumper (Section 3.8, Table 3-1) to position 3 for this example.

___________________________________________________________________________________________

Real-time Status Message: UNDERRANGEPresent capacitance/milliampere value is less than -5%.

Examples: Center wire connection is broken. Sensing elementis not operating. An elevated Zero is used and actual level isbelow 4mA point. Vessel has lost its RF ground reference.

Action: Check connections and ground.Recalibrate if this level is in operationalrange of process.

____________________________________________________________________________________________

Real-time Status Message: OVERRANGEPresent capacitance/mmilliamp value over 105% of system span.

Examples: Actual level exceeds span point on sensingelement. Cut in sensing element insulation or shorted coax.

Action: Check sensing element and coax.Recalibrate if this level is in operationalrange of process.

____________________________________________________________________________________________

3.9 PC Status Messages


33

3.10 Set D/A Trim The Digital to Analog (D/A) Trim adjusts the transmittermA (current) output. Since the smart transmitter performsa digital to analog conversion, there may be a discrepancyin the 4-20 mA output loop as measured with a reliableexternal milliamp meter.

For example, perhaps after calibration you observe thatthe tank is empty and a hand-held mA meter reads only3.94 mA, while the Real Time View in the PC Menu shows4.00 mA. By adjusting the D/A trim, you may digitallymanipulate the output current to equal 4.00. You may alsowish to adjust the high end to 20.00 mA.

To make these adjustments, click on D/A Trim on the PCsoftware Menu Screen and follow the pop-up windowinstructions:

Figure 3-14Setting D/A trim from Menu screen Pop-ups

IMPORTANT NOTE:D/A Trim is NOTa calibration!This is a pre-calibratedallignment to precisionfactory settings and israrely in need of change.The procedure is intendedonly as a slight "meter"adjustment to a knownexternal reference.

NOTICE


34

3.11 Strapping Table The strapping table is a 2-point to 21-point table used by theUniversal III TransmitterTM to cause the output current tofollow a specified relationship to the level. There are certainstrapping tables that are already built in to the transmittersoftware. These are: Linear (vertical tank); Horizontal Tankwith flat ends; Horizontal Tank with dished ends; HorizontalTank with hemispherical ends; and Spherical Tank. Thesepredefined tables are automatically created by selectionsmade with Vessel Configuration assignments duringConfiguration procedure in Section 3.7.2, and viewed byclicking Strapping Table "button" on Main menu.

If the output-to-level relationship is not defined by one ofthese tables, you may create a table in the Strapping Tableprogram. To create a non-linear relationship, you will needat least 3 points and may use as many as 21 points. A 21-point table will define the relationship with more accuracy.A common example for a simple table would be a ConeBottom Vertical tank which would require 3 points—thebottom, straight-side break point, and the top. On the otherhand, an open channel flow application could benefit fromusing all 21 available points.

a. Plan your table by filling out the form below. You mayuse the first column which lists every 5% between 0 and100%, or you may fill in your own values in column 2.

b. Fill out column 3 with output values corresponding tothose listed in column 1 or 2.

Table 3-2Universal III Strapping Table


35

3.11 Strapping Table(continued)

3.12 Digital IntegralMeter Configuration

c. Click on Strapping Table "button" to access table:

d. Enter the values you calculated into the screen viewpresented.

e. Click on Write Strapping Table.

f. Click on Exit when completed.

When the optional Digital Integral Meter (DIM) (401-44-1)is used for local display, it can be viewed through a port inthe transmitter (seen in Figure 2-16 in Section 2.9).

The meter can be configured to read any engineering units,e.g. 4-20 mA, gallons, inches, feet, etc. Status messages arealso displayed on the meter. Refer to Section 2.9 for meterinstallation.

Figure 3-15Menu Screen Transforms to Strapping Table

NOTE:By clicking on Last Read Values, this view may also be used to reviewexisting strapping tables previously entered (and probably forgotten).

NOTICE


36

3.12 Digital IntegralMeterConfiguration(continued)

To configure the meter, click on Configure Meter in menuscreen for the pop-up;

The meter is configured by:••••• setting the minimum value equal to the value to be

displayed at the LRV and,••••• setting the maximum value equal to the value to be

displayed at the URV.

Factory default settings are:Minimum Value = 0.00Maximum Value = 100.00

To set the meter display range equal to calibration range:Minimum Value = LRVMaximum Value = URV

To set the meter display range equal to percent of level:Minimum Value = 0Maximum Value = 100

When a smart transmitter is powered down or the ribboncable is disconnected, there is a 1 minute delay before theDIM begins to display upon return of power.

If the display becomes garbled:• Remove power from the smart transmitter,• Wait one minute,• Reapply power to restart the meter.

Figure 3-16Configure Meter Pop-up from Menu Screen; values relate to LRV & URV


37

3.13 Save/Print Entries

3.14 Validation

3.14.1 Validation Design Concept

In addition to your own convenience, many regulatoryagencies are requiring a record of the values being usedduring certain processes. All of the values developed in thisconfiguration and calibration procedure may be saved to bereloaded into another (or replacemnt) transmitter. All ofthe values may likewise be printed out as hard copy, in-cluding the Serial Number, transmitter software version,Tag ID, Scratch Pad, Level and Vessel Configurations,Level Calibration, all of the Real Time View numbers, andall of the Strapping Table entries.

Pop-up screens come from selections inthe FILE pull-down at the top left of thePC menu Screen..

Copies are saved in both .slt file and.txt files.

The .slt file will download intoa transmitter through the OPEN command. The text file may be printed out,or reformatted.

PRINT command provides a pre-formatted hard copy.

More and more industries are requiring formal validationof their processes for their customers as well as for variousgovernment regulatory agencies. The Universal III seriesTransmitter has this capability built in.

Smart RF Continuous Level systems derive their inputinformation from a sensing element that provides a capaci-tance value to the RF Transmitter. The RF Transmitteroutput signal is derived from this capacitance value, basedon the capacitance span of the transmitter during initialcalibration.

If the RF Transmitters minimum and maximum capaci-tance values are known, and remain unchanged, the effectsof a specific capacitance value within this range can beaccurately predicted. If a known capacitance (which can beNIST traceable) within this range produces repeatableresults and the minimum and maximum values remainunchanged the RF Level system can be assumed to beoperating correctly.

Figure 3-17Save/Print Pop-ups from Menu Screen


38

3.14.2 Validation Procedures

With a known capacitance input, the output signal wouldnot be repeatable if the calibration information is altered,or if the RF transmitter was not operating within specifica-tions. Repeatable calibration information can be Maintainedthrough the use of the Save/Print capability built into theUniversal III Transmitter.

a. Drexelbrook Laptop software must be used. Connect thelaptop to the smart level transmitter signal loop to bevalidated and start the software according to theinstructions provided at the beginning of this Section 3.

b. At the Main configuration screen observe the LevelCalibration Lower Capacitance and Upper Capacitancevalues and the Lower Level and Upper Level values.Select an NPO Capacitor (which can be NIST traceable,if desired or required) that falls somewhere mid range.Example: If Lower Capacitance is 50pF and UpperCapacitance is 2000pF, that corresponds to a Lower Leveland Upper Level of 0 - 10 feet. Select an NPO Capacitorof approximately 1000pF. [Drexelbrook 401-6-8 CapacitorSubstitute Box may also be used; it is traceable to NIST].

c. Connect the NPO capacitor selected from the last step tothe Probe and Ground connections at the transmitter(with coaxial cable from sensing element disconnected).

d. Select Real Time View on the PC software Menu Screen(F4 on your keyboard). The display should show theCapacitance as the value of the NPO Capacitor (withinthe capacitors tolerance), and the LEVEL should displayclose to the mid range of the Lower and Upper Level fromthe Level Calibration field. The Loop Current and thePercentage will also reflect the values that are generatedby the NPO Capacitor. Add to the scratch pad of the MenuScreen the value of the NPO capacitor that you used. Ifdesired, this information can be printed out for file orrecord purposes. Mark or Tag this capacitor* to correspondto this specific transmitter. Put the capacitor in a safelocation for use in subsequent testing and validation.

e. By placing the same exact capacitor* on the RFtransmitters Probe and Ground terminals and observingthe signal output generated by this capacitor, it can beverified that the transmitter is operating properly andthat the calibration information is the same as duringthe initial set up.

*NOTE: Each capacitor is unique; see note next page.

Figure 3-18Capacitance on Menu Screen

Figure 3-19Real Time View Pop-up

from Menu Screen

!"

— "+# "+,-

#$—*

"

NOTICE


39

3.14.3 Validation Results

*NOTE: Every capacitor manufactured will generate aslightly different capacitance value within it’s specifiedtolerance. By Marking the capacitor and using only thiscapacitor for testing and validating the AMETEKDrexelbrook Universal III Transmitter, the system shouldproduce repeatable results within transmitter specifications.

If the information that is shown (or printed) matches theinitial readings within system specifications, then it can beverified that the calibration and configuration is as origi-nally set. It can also be verified that the transmitter’sresponse falls within acceptable tolerances. The system haspassed validation tests. Using the Save/Print feature builtinto the transmitter allows the ability to comply with therecord-keeping needed for many processes by regulatoryagencies.

Figure 3-20Typical Print-out of Transmitter Data

AMETEK Drexelbrook205 Kieth Valley RoadHorsham, PA 19044

Telephone: 215-674-2731FAX: 215-674-2731

Service: 800-527-6297

Tag-ID: LT 101 Serial Number: 1172Scratch PAD: 500 pf NPO validation capacitor Software Version: 3.1Analog Loop Assign: LEVEL Range Position: 4Damping Time: 0 sec. Type: 30

Level Configuration Vessel Configuration Level CalibrationLevel Units: feet Vessel Units: gallons Lower Level: 3.00 ftMaximum Level: 20.00 ft Maximum Capacity: 1200.00 gal Upper Level: 8.00 ftLevel Type: Standard Vessel Type: Verticle Lower Capacitance: 37.61 pf

Upper Capacitance: 1357.13 pfLRV (4mA): 0.00 ftURV (20 mA): 10.00ft

Real Time View

Level: 22.961 ftVessel: 1377.67 galCapacitance: 1360.09 pFLoop Current: 4.31 mAPercentage: 1.43 %Status: OK

Strapping Table

Vessel Type: VerticleNumber of Points: 21

Level VolumeIn Percent Out Percent

0.00 0.00 o.oo 0.001.00 5.00 60.00 5.002.00 10.00 120.00 10.003.00 15.00 180.00 15.004.00 20.00 240.00 20.005.00 25.00 300.00 25.006.00 30.00 360.00 30.007.00 35.00 420.00 35.008.00 40.00 480.00 40.009.00 45.00 540.00 45.0010.00 50.00 600.00 50.0011.00 55.00 660.00 55.0012.00 60.00 720.00 60.0013.00 65.00 780.00 65.0014.00 70.00 840.00 70.0015.00 75.00 900.00 75.0016.00 80.00 960.00 80.0017.00 85.00 1020.00 85.0018.00 90.00 1080.00 90.0019.00 95.00 1140.00 95.0020.00 100.00 1200.00 100.00

Tag-ID: LT-101 HARTWin 2.1 May 12 2002 12:46:09 PM

NOTICE

Calibration With

Model 275 Calibrator

with Drexelbrook Device

Description


40

The Drexelbrook Device Description for the Rosemount275 hendheld calibrator makes it easy to calibrate a Uni-versal III. The device description is software stored in thememory module (located in the back portion) of the calibra-tor.

To determine if your Model 275 Handheld calibrator hasthe Drexelbrook Device Description loaded, do the follow-ing steps:

••••• Turn on the calibrator.••••• From the top screen, push 1. Offline.••••• Push 1. New Configuration••••• A Table of Contents is shown that list all the Manu- facturers in alphabetical order.••••• Drexelbrook is third on the list in the current release.••••• Select the Manufacturer (Drexelbrook) and a list of supported devices is displayed (Universal III).••••• Return to top screen, by backing up from arrow keys.

The Memory Module with the device description can bepurchased as a direct replacement either from Drexelbrook(401-700-25) or from the local Fisher- Rosemount ServiceCenter.

Appendix A describes configuration of the Universal IIItransmitter with a Rosemount 275 handheld calibratorwithout a device description.

SECTION 4

CONFIGURATION ANDCALIBRATION WITHROSEMOUNT MODEL 275WITH WITH WITH WITH WITH DREXELBROOKDEVICE DESCRIPTION

4.1 Drexelbrook DeviceDescription


41

After the Universal III transmitter is installed and looppower is applied, per Section 2, do the following:

1. Connect the Rosemount Model 275 as shown in Figure 4-1.

2. Turn on the Calibrator and look for the ONLINEONLINEONLINEONLINEONLINE screento appear. ONLINEONLINEONLINEONLINEONLINE means that the 275 Calibrator hasrecognized the Universal III and is ready for Configu-ration and Calibration.

3. You must start the process by doing the Configurationfirst-- followed by Calibration. There are also instruc-tions for configuring the Strapping Tables and fordoing a D/A Trim to make the loop output agree with acalibration standard for loop current.

Figure 4-1Typical Transmitter Loop

4.2 Start-up

Typical Transmitter Loop

Nominal 24Vdc Supply

18-30 Vdc

ABCABC7 DEFDEF8GHIGHI9

ABCABC7DEFDEF8

GHIGHI9

ABCABC7DEFDEF8 GHIGHI9


ABCABC7DEFDEF8

GHIGHI9

ABCABC7DEFDEF8

GHIGHI9

ABCABC7DEFDEF8

GHIGHI9

–

+

Resistance added ifnecessary to make total loopresistance at least 250 ohmsduring the communicationprocess.

2-wire twistedshielded pair

(recommended)

4.23

Optional looppowered indicator

e.g. DLM4000 series

Calibrator or PC Modem may be connected anywhere on thetransmitter side of the 250 ohmresistance. Voltage at the transmitterterminals must be at least 13 voltswith 20 mA of loop current.

Other possible loop devicessuch as a setpoint controller.

Optional Safety BarrierHART® Compatible


42

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.0.!

.=

.

=

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3=

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00

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.

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Refer to the following block diagram.4.3 Configuration


43

Following is the keystroke sequence for Configurationusing the Model 275 Calibrator.

Select Device SetupDevice SetupDevice SetupDevice SetupDevice Setup.

Select Configuration MenuConfiguration MenuConfiguration MenuConfiguration MenuConfiguration Menu.

Select Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config.

Select Level TypeLevel TypeLevel TypeLevel TypeLevel Type—edit Level TypeLevel TypeLevel TypeLevel TypeLevel Type—return to Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config

screen.

Select Level UnitsLevel UnitsLevel UnitsLevel UnitsLevel Units—edit Level UnitsLevel UnitsLevel UnitsLevel UnitsLevel Units—return to Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config

screen.

Select Max LevelMax LevelMax LevelMax LevelMax Level—edit Max LevelMax LevelMax LevelMax LevelMax Level—return to Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config

screen.

Select LRVLRVLRVLRVLRV—edit LRVLRVLRVLRVLRV—return to Level Configevel Configevel Configevel Configevel Config screen.

Select URVURVURVURVURV—edit URVURVURVURVURV—return to Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config screen.

Select Damp TimeDamp TimeDamp TimeDamp TimeDamp Time—edit Damp TimeDamp TimeDamp TimeDamp TimeDamp Time—return to Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config

screen.

Select Chg Anlg Loop AssignChg Anlg Loop AssignChg Anlg Loop AssignChg Anlg Loop AssignChg Anlg Loop Assign—edit Current Loop AssignCurrent Loop AssignCurrent Loop AssignCurrent Loop AssignCurrent Loop Assign. Ifcurrent loop assign is LevelLevelLevelLevelLevel and is correct, go to next screenand select ExitExitExitExitExit. Proceed to 4.3 Calibration.

If VesselVesselVesselVesselVessel configuration is to be selected, choose VesselVesselVesselVesselVessel, goback to ConfigConfigConfigConfigConfig screen and select Vessel ConfigVessel ConfigVessel ConfigVessel ConfigVessel Config. Edit allvalues as done for Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config. Select ExitExitExitExitExit and proceed to4.3 Calibration.

There are two methods of calibrating the Universal IIItransmitter: Point Calibration or Capacitance Cali-bration.

Point calibration uses the actual level in your vessel forcalibration. The further apart the two points are for thecalibration, then the better the accuracy of the overallmeasurement.

Capacitance calibration uses values obtained from theDrexelbrook Service department (or a previous calibrationor identical application) for the zero and span calibrationdata. Call 1-800-527-6297 for assistance. Please providethe purchase order number, transmitter serial number andapplication information to the Service Engineer.

4.3 Configuration(continued)

4.4 Calibration


44

It is permissible or sometimes even recommended thatboth methods be used in order to establish a calibrationstandard. For example, if the vessel was already filledbefore the calibration was attempted and it is difficult orimpossible to lower the level to establish the second point,it would be best to use a calculated zero capacitance for thelow point and actual level for the high point. While thiswouldn’t be as accurate as two known level points, it will bereasonably accurate until an actual low point can be estab-lished. The Service department will help in calculatinghigh or low capacitance values.

Refer to the following diagram.

!

!

!

!

!

"#

!

$"#

%&

$

'

(

!

!

"#

"#

!

!

"#

"#


4.4.1 Point Calibration


45

Following is the keystroke sequence for Point Calibrationusing the Model 275 Calibrator.



Select CalibrationCalibrationCalibrationCalibrationCalibration.

Select Point CalPoint CalPoint CalPoint CalPoint Cal—select either Low Point CalLow Point CalLow Point CalLow Point CalLow Point Cal or High PointHigh PointHigh PointHigh PointHigh Point

CalCalCalCalCal depending on whether you plan to raise or lower thelevel for your second point—edit value to agree with thepresent actual level and return to Point CalPoint CalPoint CalPoint CalPoint Cal screen.

ExitExitExitExitExit—Calibration is complete.

Capacitance calibration uses zero and span capacitance val-ues as the calibration data. These values can be obtainedfrom the Drexelbrook Service department (or a previouscalibration or identical application). Call 1-800-527-6297 forassistance. Please provide your DE purchase order number,transmitter serial number and application information tothe Service Engineer.

Following is the keystroke sequence for Capacitance Cali-bration using the Model 275 Calibrator.



Select CalibrationCalibrationCalibrationCalibrationCalibration.

Select Capacitance CalCapacitance CalCapacitance CalCapacitance CalCapacitance Cal—select either Lower LevelLower LevelLower LevelLower LevelLower Level or UpperUpperUpperUpperUpper

LevelLevelLevelLevelLevel depending on whether the next value will be higheror lower for the second point—edit capacitance value andlevel as a pair—return to Capacitance CalCapacitance CalCapacitance CalCapacitance CalCapacitance Cal screen.

ExitExitExitExitExit—Calibration is complete.

4.4.1 Point Calibrationcontinued)

4.4.2 CapacitanceCalibration


46

Refer to the following diagram for the D/A Trim sequence and Strapping Table configuration.

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"

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#

$

#

%

%

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4.4.3 D/A Trim

IMPORTANT NOTE:D/A Trim is NOTa calibration!This is a pre-calibratedallignment to precisionfactory settings and israrely in need of change.The procedure is intendedonly as a slight "meter"adjustment to a knownexternal reference.

NOTICE


47

The strapping table is a 2-point to 21-point table used by Univer-sal III to cause output current to follow specified relationship tolevel. There are certain strapping tables that are already built into the transmitter software. These are: Linear (vertical tank);Horizontal Tank with flat ends; Horizontal Tank with dishedends; Horizontal Tank with hemispherical ends; and SphericalTank. These predefined tables are automatically created byselections made with VesselVesselVesselVesselVessel ConfigConfigConfigConfigConfig assignment during Con-Con-Con-Con-Con-

figurationfigurationfigurationfigurationfiguration procedure in Section 4.3.If output-to-level relationship is not defined by one of thesetables, you may create a table in Strapping Table program. Tocreate a non-linear relationship, you will need at least 3 pointsand may use as many as 21 points. A 21-point table will definerelationship to about a 0.1% accuracy. Common example for asimple table would be Cone Bottom Vertical tank which wouldrequire 3 points—bottom, straight-side break point, and top.Open channel flow application, however, could benefit from usingall 21 available points.

••••• Plan your table by filling out form below. You may use firstcolumn which lists every 5% between 0 and 100%, or you may fillin your own values in column 2.

••••• Fill out column 3 with output values corresponding to thoselisted in column 1 or 2.

Point Number Level Standard Level Optional Output ValuePreset Values Values In Selected% Level % Level Units

1. 0

2. 5

3. 10

4. 15

5. 20

6. 25

7. 30

8. 35

9. 40

10. 45

11. 50

12. 55

13. 60

14. 65

15. 70

16. 75

17. 80

18. 85

19. 90

20. 95

21. 100

4.4.4 Strapping Table


48

Use Table 5-1 as a guide to find and correct a problemwhen it occurs. Most problems are not related to transmit-ter failure. It is important to be methodical when trackingdown a problem. If you experience a problem that youcannot solve using this guide, call the Drexelbrook 24-hourService Hotline at 1-800-527-6297 or 215-674-1234. Youmay also E-mail us at the Internet address:[email protected]. Further serviceinformation may be found at our Internet World Wide Webaddress http://www.drexelbrook.com. When you con-tact us, be prepared to give the service person as muchinformation as you can about the model numbers, applica-tion requirements, and the materials being measured. Atthe end of this section, a form is available to organize theinformation that will help us resolve the problem. Prior toyour call, a copy of the completed form can be faxed di-rectly to the Service department at (215) 443-5117.

SECTION 5TROUBLESHOOTING

5.1 Identifying aProblem/Symptom


49

Problem/Symptom Tests in order Reference Commentsof probability Section(s)

Rosemount 268 or 275 Check calibrator connections 5.2 and 5.3 Often a resultCalibrator gives error Check for 250Ω resistance (min.) of loop connec- message that no device Check voltage at transmitter tion problemswas found Check transmitter 5.6

Rosemount 275 Calibrator Check calibrator connections 5.2 and 5.3 Often a resultgives error message that Check for 250Ω resistance (min.) of loop connec-device could not be Check voltage at transmitter tion problemsidentified Check transmitter 5.6

Can’t communicate Check calibrator connections 5.2 and 5.5 Often a resultwith transmitter using Check for 250Ω resistance (min.) of loop connec-Drexelbrook PC Check voltage at transmitter tion problemsSoftware Check transmitter 5.6

Try another modem

0 mA output all the time Check voltage at transmitter 5.2 (5.3, 5.4, Probable loop(no measurable output Check polarity of loop or 5.5) problem. Faultycurrent at any time) Test Transmitter 5.6 connection in

loop.

More than 20 mA Check for moisture in head of sensoroutput all the time Test Sensing Element 5.7(output current Test Transmitter 5.6always exceeds 20 mA) Check Calibration Section 6

Output drifts (output Test transmitter without 5.6accuracy varies slowly sensing element (drift test)over time…e.g. hours Verify proper sensoror days) ground reference Fig. 2-6

Output erratic - (output Test Transmitter 5.6 Erratic readingsjumps around noticeably Check process level often show actualin terms of seconds or Check for Static Discharge 5.9 process conditions.minutes) Check for Radio Interference 5.10 Look for bubbles or

stratification, etc.

Output intermittent - Check sensing element/cable 5.7 Faulty sensing(output jumps quickly connections 5.8 element or cableusually between > 0mA connection.and some "on-scale" value

Table 5-1Problem/Symptom Chart


50

Problem/Symptom Tests in order Reference Commentsof probability Section(s)

Inaccurate readings Check calibration Section 6 Have you verified(Level readings are Test transmitter 5.6 actual level?incorrect compared to Check method of times even sightan actual known level) of comparison gages can be

misleading.

Reading does not Check cables 5.8 Be sure that levelchange with level Check sensing element 5.7 is really changing

Test transmitter 5.6 Possible pluggedor unventedstilling well

Output goes in Check calibration Section 6 Probable highopposite direction point cal/lowfrom level change point cal reversal

or invertedinterfaceapplication.

Application-related CommentsProblems

Product Bridging When process material fills what was originally airspce betweenthe sensor and a nozzle or the vessel, it no longer behaves like acoating. It measures like actual level. Contact Drexelbrook.

Corrosion of metal parts TFE and stainless steel in the sensor's pressure seal havewidely different coefficients of expansion that sometimes permitpressure leaks to occur. Re-torqueing the packing assembly canusually fix the problem. Contact the Service department for theproper torque values and procedure.

Table 5-1Problem/Symptom Chart (cont.)


51

Figure 5-1Typical Transmitter Loop

5.2 TroubleshootingLoop Connection

Specific transmitter loop connections will vary from instal-lation to installation but in general will be connected in asimilar manner to typical transmitter loop in Figure 5-1.When troubleshooting the loop connection, verify thefollowing items.

••••• Loop devices are wired in series.

••••• There is at least 250 ohms total loop resistance.

••••• There is at least 12 Vdc available for the transmitter when a loop current of 20 mA is flowing.

Typical Transmitter Loop

Nominal 24Vdc Supply

18-30 Vdc

ABCABC7 DEFDEF8GHIGHI9

ABCABC7DEFDEF8

GHIGHI9



ABCABC7DEFDEF8

GHIGHI9

ABCABC7DEFDEF8

GHIGHI9

ABCABC7DEFDEF8

GHIGHI9

–

+

Resistance added ifnecessary to make total loopresistance at least 250 ohmsduring the communicationprocess.

2-wire twistedshielded pair

(recommended)

4.23

Optional looppowered indicator

e.g. DLM4000 series

Calibrator or PC Modem may be connected anywhere on thetransmitter side of the 250 ohmresistance. Voltage at the transmitterterminals must be at least 13 voltswith 20 mA of loop current.

Other possible loop devicessuch as a setpoint controller.

Optional Safety BarrierHART® Compatible


52

5.4 Rosemount Model275 Calibrator withdevice descriptioncannot identify orfind device

This condition may be the result of trying to calibrate atransmitter with software less than version 3.0 (transmit-ters shipped prior to approximately January 1997). Thereare two options you can use to identify the device anddelete the error message.

—Option 1Configure the transmitter as a "generic" device per theinstructions in this manual.

—Option 2Contact the Drexelbrook Service department (1-800-527-6297) about upgrading your transmitter to the latestsoftware.

5.3 RosemountModel 268 or 275Calibratorcannot identifyor find device

If the Rosemount 268 or 275 calibrator (generic) gives errormessage that no device description was found, use thefollowing flowchart to troubleshoot.

Is loopcurrent between

3.5 and 23.5 mA?

Is there aminmum of 250

ohms loopresistance?

1. Check calibrator connections to loop per loop drawing Figure 5-1.2. Check for "noise" and ripple on loop with oscilloscope. Maximum noise level per HART Foundation is 1.2 mV rms (500 - 10 kHz). Maximum ripple (47 - 125 hZ) specification is .2V p-p. Line noise can sometimes be traced to things like motor speed controller wiring in close proximity with transmitter. Noise can sometimes be overcome by increasing loop resistance thereby increasing calibrator signal. Noise effects can also be reduced by connecting calibrator directly at transmitter. Generally noise is only a problem when calibrator is communicating with transmitter and does not affect normal operation of transmitter.3. Check voltage at transmitter it should be at least 12 V when 20 mA is flowing in loop.4. If wiring is correct, go to Section 5.6 to test transmitter.

Calibrator doesnot

communicatewith

transmitterYes

Yes

Check:1. If current greater than 23.5 mA, disconnect at sensing element and re-check. If current returns to normal, check sensing element using checkout procedure in Section 5.7. If current does not return to normal, test transmitter with procedure in Section 5.6.

2. If loop current is 0 mA, check polarity of wiring at transmitter. If OK check for open loop.

3. If loop current is between 0 and 3 mA transmitter is likely bad. Test with procedure in Section 5.6.

4. Check voltage at transmitter, it should be at least 12 volts when 20 mA is flowing in loop.

5. Disconnect the three probe cable connections at transmitter and retry. If it now communicates, check cable and probe as described in Sections 5.7 & 5.8.

1. Check Power Supply source resistance. The 250 ohms may be built in as with the Drexelbrook 401- 500 series or most DCS inputs.

2. If not, add enough resistance for loop to be at least 250 ohms.

Start

No

No


53

5.5 Universal IIItransmitter doesnot communicatewith DrexelbrookPC software

Is loopcurrent

between 3.5 and23.5 mA?

Is there aminmum of 250

ohms loopresistance?

Are you connectedto a DCS?

Is It Polling?

Make it stop polling or powertransmitter from a separatesource - then re-checkoperation.

Yes

Yes

YesCheck:1. Is correct COM Port selected at startup?2. Is there any software running that would re-direct COM Port such as Windows, mouse drivers, terminal emulation software, or TSR's. (This can be tested by booting from Drexelbrook Calibration software in the A: drive)3. Possible bad RS-232 cable or defective modem.4. Check modem connections to loop per loop drawing on Figure 3-1.5. Go to Section 5.6 to test transmitter.

Modem doesnot

communicatewith

transmitter.

No

No

Start

No

Are you usingthe Drexelbrooksupplied Viatormodel 1000A

modem?

Check:1. Is modem non-isolated from ground and/or is your laptop plugged into AC power.? If so you may have ground problem. Contact Service department.2. Some laptops don't provide enough voltage to drive modem correctly from COM Port. Check with modemsupplier or try a different laptop.3. Checkout "Yes" response tests listed below.

No

Yes

Check:1. If current is greater than 23.5 mA disconnect at sensing element and re-check. If current returns to normal, check sensing element using checkout procedure in Section 5.7. If current does not return to normal, test transmitter with procedure in Section 5.6.2. If loop current is 0 mA, check polarity of loop at transmitter. If it is OK, check for open loop.3. If loop current is between 0 and 3 mA transmitter is likely bad. Test with procedure in Section 5.6.4. Check voltage at transmitter it should be at least 12 volts when 20 mA is flowing in the loop5. Disconnect the three probe cable connections at transmitter and retry. If it now communicates, check cable and probe as described in Sections 5.7 & 5.8.

No

Yes

1. Check Power Supply and loop source resistance (the 250 ohms may be built in as with the Drexelbrook 401-500 series or most DCS inputs).2. If not there add enough resistance for loop to be at least 250 ohms.

1. Check calibrator connections to loop per loop drawing Figure 3-1.2. Check for "noise" and ripple on loop with oscilloscope. Maximum noise level per HART Foundation is 1.2 mV rms (500 - 10 kHz). Maximum ripple (47 - 125 Hz) specification is .2V p-p. Line noise can sometimes be traced to things like motor speed controller wiring in close proximity with transmitter. Noise can sometimes be overcome by increasing loop resistance thereby increasing calibrator signal. Noise effects can also be reduced by connecting calibrator directly at transmitter. Generally noise is only a problem when calibrator is communicating with transmitter and does not affect normal operation of transmitter.3. Check voltage at transmitter. It should be at least 12 volts when 20 mA is flowing in the loop.4. If wiring is OK, go to Section 5.6 to test transmitter.


54

To troubleshoot the transmitter, use one of the followingtests, depending on the device used with your calibration.

Some of the following test require the use of high qualityfixed capacitors in the picofarad ranges or a Drexelbrookcalibrator box (C-box 401-6-81). Contact the DrexelbrookService department if you need a C-box. Fixed temperaturestable capacitors (NPO types) can often be found at many elec-tronic supply houses.

—TRANSMITTER TESTUsing a PC or 275 Handheld WITH Device Description1. Determine the span range currently selected on the

electronic unit. See Figure 5-2, next page.

2. Using the MAX pF values listed in Figure 5-2, select acapacitance value near the midpoint of the MAX pFrange. For example, position #4 has a MAX pF rangeof 2000 pF. Select a 1000 pF capacitance for this test.

3. Remove all three connections of the coaxial cable atthe transmitter's probe terminals.

4. Place capacitor on transmitter from PROBE to GND(ground) terminals.

5a.Using a PC - Using the real-time view (F4F4F4F4F4), verifythat the displayed capacitance value is within the valueand tolerance printed on the test capacitor. If using aDrexelbrook C-box, be sure to add the standing capaci-tance of the box (10pF low range, 20 pF normal range).

5b.Using a Rosemount 275 handheld with devicedescription - Viewing the HOMEHOMEHOMEHOMEHOME screen, verify thatthe displayed capacitance value is within the valueand tolerance printed on the test capacitor. If using aDrexelbrook C-box, be sure to add the standing capaci-tance of the box (10pF low range, 20pF normal range).

6. If the displayed capacitance value is within the statedtolerance, the unit is working. If the displayedcapacitance value is not accurate, call 1-800-527-6297.

5.6 TroubleshootingTransmitter

!"

— "+# "+,-

#$—*

"


55

—TRANSMITTER TESTUsing a 268 or 275 Handheld WITHOUT a DeviceDescription (Generic Mode)

1. Visually verify the span range of the electronic unit.

2. Using the C-box, adjust the capacitance until 4 mA isachieved. Record value.

3. Adjust C-box capacitance until 20 mA is achieved.Record value.

4. Using Figure 5-2, verify that the capacitance valuerecorded at 20 mA is less than the MAX pF value forthe Span Range Position of the electronic unit .

SPAN JUMPER POSITIONRANGE 1 2 3 4 5 6

MAX pF 20 100 450 2000 10000 45000

5. Verify that the loop configuration is is Level ConfigLevel ConfigLevel ConfigLevel ConfigLevel Config

(signal output linear to level vs. Vessel ConfigVessel ConfigVessel ConfigVessel ConfigVessel Config).

6. Subtract pF value recorded for 4 mA from the pF valuerecorded for 20 mA. Divide this number in half.Example: 4 mA = 120 pF

20 mA = 800 pF 800 pF – 120 pF = 680 pF

680 pF ÷ 2 = 340 pF

7. Adjust the capacitance box (C-box) to the numberfigured in step 6. The signal should read approxi-mately 50%.

8. If the display reads 50%, the unit is working properly.If the display is is not accurate, contact the Servicedepartment at 1-800-527-6297 for further assistance.

5.6 TroubleshootingTransmitter(continued)

Figure 5-2Span Range Capacitance Values


56

If symptoms point toward calibration drift, it is importantto determine if the apparent drift is coming from the trans-mitter, the sensing element, or the application of theequipment. The following test determines if the transmit-ter is stable. In most cases, no drift will be found in thetransmitter.

1. Remove coaxial cable from the transmitter terminals.

2. Without changing any data stored in the transmitter,connect a Drexelbrook capacitance substitution box(401-6-8) or an NPO test capacitor from the PROBE

terminal to the GND terminal on the transmitter.(Select a capacitance value that produces between 4and 20 mA of loop current.)

3. Observe the loop current over a 12-hour period toconfirm the stability of the unit. If the readingsremain stable for this period, then the problem is notin the transmitter. If the loop current has changedmore than 1% during the test period, then the unit isdefective. Please contact the Service department forfurther instructions regarding repair or replacement.

Troubleshooting sensing element requires use of ananalog ohmmeter. Digital meters do not properly measureresistance for the purpose of this test. An analog ohmmetertypically provides more current when measuring resis-tance, which is required to detect a pinhole or crack in thesensing element insulation. In addition, digital metersfrequently give erroneous results due to a battery-likeeffect when dissimilar metals contact conductive liquids.

CAUTIONSensing element is intrinsically safe. Therefore,when using this product, it is recommended that allservice activity comply with appropriate guidelines.

Remove sensing element from vessel to a safe area.Test outlined in steps 1 and 2 can be performed in ametal test vessel filled with high conductivity water.Depending on locality, tap water may not be suit-able. If not, a spoonful of table salt may work.

In the following tests, if it is not possible to raise or lowerlevel in vessel, sensing element may be suspended in ametal pipe or other container that is filled with conductivewater (see above note) and connected to grounded probecondulet. If container is not metalic, then a ground wire orrod is needed to be placed into the water and referenced toprobe condulet or mounting devices.

5.6.1 TransmitterDrift Test

5.7 TroubleshootingSensing Element

NOTICE


57

—Testing the Sensing Element Step 1 (Figure 5-3)

With the material below the sensor, and the coaxialcable disconnected at the sensing element, measure theresistance from the sensing element center connector toground connector (or condulet). The ohmmeter should beset to R x 10000 scale. The reading should be infinite (opencircuit). Readings of less than one meg-ohm indicate exces-sive electrical leakage, probably due to product leakage orcondensation in the packing seal or condulet. Contact theService department for recommended repairs.

Figure 5-3Sensing Element Testing,

Material Below the Sensing Element

—Testing the Sensing ElementStep 2 (Figure 5-4)

Raise the level in the vessel to cover as much of the sensoras possible. Repeat the measurement made in step 1.Readings of 1 meg-ohm or less indicate a pinhole or crackin the sensing element insulation. Failed insulation is notfield repairable. Consult the Service department for fur-ther assistance.

Figure 5-4Sensing Element Testing,

Material Above the Sensing Element

5.7 TroubleshootingSensing Element(continued)


58

5.8 TroubleshootingCoaxial Cable

NOTEIf there is water or other conductive material in theconduit it can change the electrical properties of thecoax cable and cause the system to perform poorly.Moisture in the conduit may not be detected by thefollowing test. The only sure way is to inspect thecoax and associated conduit for trapped water.

1. Disconnect all three wires of the coaxial cable atthe electronic unit.

2. Disconnect all wires at the sensing element end ofthe coax.

3. Using an ohmmeter, measure between two ofthe coaxial cable conductors. Note any reading.Repeat for all three conductors. All readingsshould show an open circuit, (infinite resistance).

4. Check for continuity of each conductor. Short outtwo of the coaxial cable conductors and measurethese two conductors at the other end. A readingclose to 0 ohms should be shown.

NO CONNECTION

OHMMETER

CENTER - GROUND CENTER - SHIELD SHIELD - GROUND

OHMS OHMS OHMS

CORRECT READING = OPEN CIRCUIT

CHECK FOR SHORTS

8

0 88

8

SHORT OUTTWO CONDUCTORS

CENTER - GROUND CENTER - SHIELD SHIELD - GROUND

OHMS OHMS OHMS

SHORTED WIRES SHOULD READ 0 OHMS

CHECK FOR CONTINUITY

8

0

"0""0""0"

OHMMETER

NOTICE


59

Static electricity can cause the 4-20 mA output to appearto jump around in an erratic fashion with a time period offew seconds. Applications that are prone to static electricityinclude insulating liquids that may be agitated or pumpedand granulars that may be air-conveyed at high rates ofspeed. Conductive liquids and granulars tend not to gener-ate static electricity. In addition to causing erratic read-ings, static electricity can cause instrument failure. If youever get a shock from a sensing element, you need staticprotection.

Drexelbrook normally supplies static electricity dischargedevices (spark protectors) with its sensing elements thatare going to be used in these types of applications. If youneed a spark protector, contact the Drexelbrook Servicedepartment.

All Drexelbrook transmitters have a significant amount ofRFI protection built in. There are situations, however,where the standard protection is inadequate. RFI filtersare available to provide additional protection for both thesensor and the 4-20 mA loop from unusually difficultsources of interference. Proper grounding and carefulattention to installation practices can usually make themunnecessary. Some recommended installation practicesinclude:

1. Use twisted shielded cable for the 4-20 mA loop.2. Use grounded metal conduit for all entrances to the

transmitter housing.3. Ground the transmitter housing to a good earth

ground.4. Use concentric shield sensors in non-metallic vessels.

If RFI continues to be a problem, contact the Drexelbrookservice department for the proper filters and assistance.

5.9 Static Electricity

5.10 Radio FrequencyInterference


60

!!"#$%&'$(%)*+$,#"--.&#,,%

/

0

01

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0

2

3 2

2

!"#$%&'(# ! )) !"#$%&'(# !

4

3

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2567/

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252

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0 9

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61

78

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3< < 6=1

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61

5.11 Factory AssistanceAMETEK Drexelbrook can answer any questions about yourlevel measurement system. Call Customer Service at1-800-553-9092 (US and Canada) , or + 215-674-1234 (International).

If you require assistance and attempts to locate the problemhave failed:••••• Contact your local Drexelbrook representative,••••• Call the Service department toll-free at 1-800-527-6297

(US and Canada) or + 215-674-1234 (International),••••• FAX the Service department at + 215-443-5117, or••••• E-Mail to [email protected]

Please provide the following information:

Instrument Model Number ___________________________

Sensing Element Model Number and Length ___________

Original Purchase Order Number _____________________

Material being measured _____________________________

Temperature __________________________________

Pressure ______________________________________

Agitation______________________________________

Brief description of the problem _______________________________________________________________________________________________________________________________

Checkout procedures that have failed __________________________________________________________________________________________________________________________

5.12 Field ServiceTrained field servicemen are available on a time-plus-expensebasis to assist in start-ups, diagnosing difficult applicationproblems, or in-plant training of personnel. Contact the ser-vice department for further details.

5.13 Customer TrainingPeriodically, AMETEK Drexelbrook instrument training semi-nars for customers are held at the factory. These sessions areguided by Drexelbrook engineers and specialists, and providedetailed information on all aspects of level measurement, includ-ing theory and practice of instrument operation. For more infor-mation about these valuable workshops, write toAMETEK Drexelbrook, attention:Communications/ Training Group, or call direct + 215-674-1234.


62

5.14 Equipment ReturnIn order to provide the best service, any equipment beingreturned for repair or credit must be pre-approved by thefactory.

In many applications, sensing elements are exposed to haz-ardous materials.••••• OSHA mandates that our employees be informed and

protected from hazardous chemicals.••••• Material Safety Data Sheets (MSDS) listing the

hazardous materials to which the sensing element hasbeen exposed MUST accompany any repair.

••••• It is your responsibility to fully disclose all chemicalsand decontaminate the sensing element.

To obtain a return authorization (RA#), contact the Servicedepartment at 1-800-527-6297 (US and Canada) or + 215-674-1234 (International).Please provide the following information:

Model Number of Return Equipment ____________________

Serial Number _________________________________________

Original Purchase Order Number _______________________

Process Materials that equipment has been exposedto_____________________________________________________

MSDS sheets for any hazardous materials

Billing Address ______________________________________________________________________________________________

Shipping Address ____________________________________________________________________________________________

Purchase Order Number for Repairs _____________________

Please include a purchase order even if the repair is underwarranty. If repair is covered under warranty, you will not becharged.

Ship equipment freight prepaid to:AMETEK-DREXELBROOK.205 KEITH VALLEY ROADHORSHAM, PA 19044-1499COD shipments will not be accepted.


63

—Power Requirement12 to 50 VDCMinimum of 12 VDC at 20 mA

—Input Range409-1000: 1.0 to 45,000 pF

—Output Range4-20 mA

—Accuracy± .25% of range. Accuracy includes the combinedeffects of linearity, hysteresis, and repeatability. Itrefers to the transmitter only and is measured at

reference conditions of 25 degrees C ±1°, 10-55% R.H.and 24 ±1.2 Vdc, using an admittance standard(applied to the transmitter sensor terminals) in placeof the sensor.

—Load ResistanceMaximum Load Resistance = 750 ohmsMinimum Load Resistance = 250 ohms

—Temperature Effect ±1% of range per 50°F (30°C).

—Supply Voltage Effect< 0.1% from 12 to 50 VDC.

—Effect of Load Resistance< 0.1% for full resistance range at 24 VDC supply.

—Response to Step Change1 second standard (to 90% of final value);0-90 seconds available with delay.

—Fail-SafeLow-Level Fail-Safe (LLFS) standard.Also called direct-acting because current increases asthe level increases. High-level Fail-Safe (HLFS). Alsocalled reverse-acting because current decreases aslevel increases.

SECTION 6SPECIFICATIONS

6.1 TransmitterSpecifications


64

NOTETHERE ARE NO DEVICES THAT ARE ABSO-LUTELY “fail-safe.” Fail-safe means that in theevent of the most probable failures, the instru-ments will fail safely. Probable failures includethings such as loss of power and transistorand component failures. If your applicationneeds absolute fail-safe, a back-up instrumentshould be installed.

—Ambient Temperature-40°F to +185°F (-40°C to 85°C)

—Calibration Adjustments Range Span, 6 positions (side panel)

—Lowest Permitted Resistance(bare sensing element to ground) causing 5% error ineach model:

600 ohms - 409-1000100K ohms - 409-1030

—Intrinsic SafetySensing element and cable: Designed to be intrinsi-cally safe for Class I Groups A, B, C and D; Class IIGroups E, F, and G, (Class III, Div. 1). Electronics andsignal wires: Intrinsically safe for Class I Groups A,B, C, and D, Class II Groups E, F and G (Div. 1) whenpowered by an intrinsically safe power supply. Non-incendive for Class I Groups A, B, C, and D;Class IIGroups E, F, and G, Class III, (Div. 2).

—Sensing Element Cable Length150 feet maximum.

—General Purpose 380-XXX-12.51" (13mm) OD at largest point,160°F (70°C) temperature limit.

—Composite Cable (first 10 feet high temperature)380-XXX-18.62" (16mm) OD at largest point, 450°F(230°C) temperature limit for first 10 feet.160°F (70°C) temperature limit for remainder.

—High Temperature Cable 380-XXX-11.51" (13mm) OD at largest point,450°F (230°C) temperature limit.

6.1 TransmitterSpecifications(continued)

6.2 Coaxial CableSpecifications

NOTICE

Calibration With

Model 275 Calibrator Without Device

Description (Generic Mode)


A-1

APPENDIX A

CONFIGURATION &CALIBRATIONOF UNIVERSAL IIIWITH MODEL 275COMMUNICATORWITHOUTWITHOUTWITHOUTWITHOUTWITHOUT A DEVICEDESCRIPTION

A.1 Range/Span Control

The Model 275 Communicator can be used to enter anddownload configuration/calibration values to the UniversalIII transmitter. Some definitions:

LRV - Lower Range Value of control loop.LSL - Lower Sensor Limit corresponding to minimum level point.PV - Process Variable; level value from transmitter.SV - Secondary Variable; could be volume or weight based on PV.URV - Upper Range Value of control loop.USL - Upper Sensor Limit corresponding to maximum level point.

The first step in configuration is to identify the span rangeposition of the instrument. There is a jumper on the side ofthe electronics chassis: Range Span. The Range Spanprovides continuous adjustment of the change in capaci-tance required to produce full scale current. Each RangeSpan position advances the range in inches or feet toapproximately five times the previous setting. Table A-1gives the range span position for a number of commonsensing elements and range of measurement.

Table A-1Range/Span Setting Chart

[PROBE LENGTH vs. SPAN POSITION NUMBER / MAXIMUM pF]

JUMPER POSITION: 1 2 3 4 5 6MAX pF 20 100 450 2000 10000 45000

SYSTEM SENSOR MAXIMUM PROBE LENGTH IN FEET

[CONDUCTING LIQUIDS]508-75-X09 700-1-22 N/A N/A 5.4 20 N/A N/A509-75-X25 700-5-54 N/A N/A 9.2 40 200 920509-75-X06 700-2-57 N/A N/A 1.2 5.3 20 N/A509-75-X13 700-5-18 N/A N/A 1.4 6.25 31 140509-75=X07 700-2-24 N/A N/A 7.8 20 N/A N/A509-75-X05 700-2-37 N/A N/A N/A N/A 4.1 14509-77-X06 700-1-24 N/A N/A 5.4 20 N/A N/A509-75-X30 700-1-62 N/A N/A 5.4 20 N/A N/A509-75-724 700-5-29 N/A N/A N/A 4.2 21 95

[INTERFACE APPLICATION]509-76-X06 700-2-57 N/A N/A 1.2 5.3 20 N/A509-76-X02 700-2-27 N/A N/A 1.0 4.8 20 N/A509-76-X04 700-2-37 N/A N/A N/A N/A 4.0 14

[INSULATING K=1.5-5]509-77-X06 700-1-24 N/A 2.7 12.5 20 N/A N/A

700-1-22 N/A 8.3 20 N/A N/A N/A700-5-54 N/A 8.0 37.5 16 N/A N/A700-2-57 N/A 3.6 16.2 20 N/A N/A700-5-18 N/A 3.8 17.1 76 N/A N/A700-2-24 N/A 6.0 20 N/A N/A N/A700-2-27 N/A 5.0 20 N/A N/A N/A700-2-37 N/A 5.0 14 N/A N/A N/A


A-2

To become familiar with the operation of the Model 275Communicator, it is best to review the Operating Manualthat comes with the unit. This paragraph reviews some ofthe basic characteristics of the Model 275 configuration/calibration software. The following pages show the deci-sion tree menus.

Arrow Keys: Use the arrow keys to move through thesoftware menus. An arrow at the beginning of the menuitem indicates the next progressive step.

Alphanumeric Keys: Use the alphanumeric keys to enterdata. Data fields are characterized by a blinking cursor.

Function Keys: The function keys, F1 through F4, indi-cate the specific actions that are available to complete thesoftware function. The action words that appear aboveeach key changes as you move through the menus andselect the software task.

Heart Symbol : When a appears in the upper rightcorner of the screen, communication is occurring betweenthe communicator and the transmitter.

To name or identify the transmitter, use the 8-character TagID. The Tag ID is entered or changed in the following menus.

a) select the ONLINE MAINONLINE MAINONLINE MAINONLINE MAINONLINE MAIN menub) ⇒ 1 DEVICE SETUPDEVICE SETUPDEVICE SETUPDEVICE SETUPDEVICE SETUP ⇒ ⇓ ⇓c) ⇒ 3 BASIC SETUPBASIC SETUPBASIC SETUPBASIC SETUPBASIC SETUP ⇒d) ⇒ 1 TAGTAGTAGTAGTAG ⇒e) change (use alphanumeric keys) Tag IDf) F4 ENTERF4 ENTERF4 ENTERF4 ENTERF4 ENTER

g) F2 SENDF2 SENDF2 SENDF2 SENDF2 SEND

h) F4 OKF4 OKF4 OKF4 OKF4 OK

i) F4 OKF4 OKF4 OKF4 OKF4 OK

or:

a) select the ONLINE MAIN ONLINE MAIN ONLINE MAIN ONLINE MAIN ONLINE MAIN menub) ⇒ 1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP⇒ ⇓ ⇓c) ⇒ 3 BASIC SETUP3 BASIC SETUP3 BASIC SETUP3 BASIC SETUP3 BASIC SETUP⇒ ⇓ ⇓ ⇓d) ⇒ 4 DEVICE INFORMATION4 DEVICE INFORMATION4 DEVICE INFORMATION4 DEVICE INFORMATION4 DEVICE INFORMATION⇒ ⇓ ⇓ ⇓e) ⇒ 4 TAG⇒f) change (use alphanumeric keys) Tag IDg) F4 ENTERF4 ENTERF4 ENTERF4 ENTERF4 ENTER

h) F2 SENDF2 SENDF2 SENDF2 SENDF2 SEND

i) F4 OKF4 OKF4 OKF4 OKF4 OK

j) F4 OKF4 OKF4 OKF4 OKF4 OK

k) F3 HOMEF3 HOMEF3 HOMEF3 HOMEF3 HOME

A.2 Basic Rulesand Conventionsof HARTConfigurationSoftware (Model 275)

A.3 Tag ID


A-3

A.4 Set Up Procedures


A-4

A.4 Set Up Procedures(Continued)


A-5

A.4 Set Up Procedures(Continued)


A-6

Within the Model 275 configuration, there are severaldifferent menus that allow you to view the Process Vari-able (PV) and the Analog Output (AO1).

View PV Input:a) select the ONLINE MAINONLINE MAINONLINE MAINONLINE MAINONLINE MAIN menu ⇓b) ⇒ 1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP ⇒ ⇓ ⇓ ⇓c) ⇒ 4 DETAILED SETUP4 DETAILED SETUP4 DETAILED SETUP4 DETAILED SETUP4 DETAILED SETUP ⇒d) ⇒ 1 SENSORS1 SENSORS1 SENSORS1 SENSORS1 SENSORS ⇒e) ⇒ 1 PV1 PV1 PV1 PV1 PV ⇒f) view Process Variable g) EXIT F4EXIT F4EXIT F4EXIT F4EXIT F4

h) HOME F3HOME F3HOME F3HOME F3HOME F3

or:

a) select the ONLINE MAINONLINE MAINONLINE MAINONLINE MAINONLINE MAIN menu ⇓b) ⇒ 2 PV2 PV2 PV2 PV2 PV ⇒c) view Process Variable d) F4 EXITF4 EXITF4 EXITF4 EXITF4 EXIT

e) ⇒ 2 PV2 PV2 PV2 PV2 PV ⇓f) ⇒ 3 PV AO3 PV AO3 PV AO3 PV AO3 PV AO

g) view Analog Output h) F4 EXITF4 EXITF4 EXITF4 EXITF4 EXIT

or:

a) select the ONLINE MAINONLINE MAINONLINE MAINONLINE MAINONLINE MAIN menub) ⇒ 1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP1 DEVICE SETUP

c) ⇒ 1 PROCESS VARIABLES1 PROCESS VARIABLES1 PROCESS VARIABLES1 PROCESS VARIABLES1 PROCESS VARIABLES

d) ⇒ 1 SNSR 1 SNSR 1 SNSR 1 SNSR 1 SNSR ⇒e) view Process Varible f) F4 EXITF4 EXITF4 EXITF4 EXITF4 EXIT

g) ⇒ 1 SNSR1 SNSR1 SNSR1 SNSR1 SNSR ⇓h) ⇒ 2 AI % RANGE2 AI % RANGE2 AI % RANGE2 AI % RANGE2 AI % RANGE ⇒i) view PV%PV%PV%PV%PV% j) F4 EXITF4 EXITF4 EXITF4 EXITF4 EXIT

k) ⇒ 2 AI % RANGE2 AI % RANGE2 AI % RANGE2 AI % RANGE2 AI % RANGE ⇓l) ⇒ 3 AO13 AO13 AO13 AO13 AO1 ⇒m) view Analog Output n) EXIT F4EXIT F4EXIT F4EXIT F4EXIT F4

o) HOME F3HOME F3HOME F3HOME F3HOME F3

A.5 Reading Inputand Output


A-7

When calibrating using a handheld without a device descrip-tion, tank level must be moved. Calibration is a two-stepprocess. A low point calibration and high point calibrationare required. Calibration points do not have to be an emptytank or a full tank. (example: low point performed at 20% andhigh point performed at 80 % will work). You also may per-form high point cal before low point cal.

From main screen go to:

1 Device setup1 Device setup1 Device setup1 Device setup1 Device setup

2 Diag/Service2 Diag/Service2 Diag/Service2 Diag/Service2 Diag/Service

3 Calibration3 Calibration3 Calibration3 Calibration3 Calibration

2 Enter values2 Enter values2 Enter values2 Enter values2 Enter values

You now have four choices:1 PV LRV1 PV LRV1 PV LRV1 PV LRV1 PV LRV

2 PV URV2 PV URV2 PV URV2 PV URV2 PV URV

3 PV USL3 PV USL3 PV USL3 PV USL3 PV USL

4 PV LSL4 PV LSL4 PV LSL4 PV LSL4 PV LSL

Choose PV LRVPV LRVPV LRVPV LRVPV LRV if your vessel currently has a low level in it.Choose PV URVPV URVPV URVPV URVPV URV if your vessel currently has a high level in it.

Edit the displayed value to equal the actual tank level, then:

ENTERENTERENTERENTERENTER

SENDSENDSENDSENDSEND

OKOKOKOKOK

OKOKOKOKOK

1 Apply values1 Apply values1 Apply values1 Apply values1 Apply values

OKOKOKOKOK

You now have two choices:11111 4mA2 2 2 2 2 20 mA

Choose 20mA if you are performing a high point calibration.Choose 4mA if you are performing a low point calibration.

Continue: OKOKOKOKOK


3 EXIT3 EXIT3 EXIT3 EXIT3 EXIT

OKOKOKOKOK

HOMEHOMEHOMEHOMEHOME

Observe on the home screen that your PV URVPV URVPV URVPV URVPV URV or PV LRVPV LRVPV LRVPV LRVPV LRV

value has been changed by the calibration procedure. Youmust manually change these values back. Re-enter yourdesired PV URVPV URVPV URVPV URVPV URV and PV LRVPV LRVPV LRVPV LRVPV LRV at this time.

This completes the first calibration point of the two-stepprocess. For the second point, change the level in your tankand repeat the entire above procedure.

A.6 Calibration UsingActual Tank Level


A-8

When performing a bench calibration tank level will be simulatedusing a Drexelbrook 401-6-8 C-box. Calibration is a two-step pro-cess. A low point calibration and high point calibration are required

Hook up a Drexelbrook c-Box in place of the sensing element. Dialup the capacitance value that corresponds to an empty tank. Forspecific information on how to wire and use the C-box calibrator seethe instructions that came with the calibrator.

From main screen go to:

1 Device setup1 Device setup1 Device setup1 Device setup1 Device setup

2 Diag/Service2 Diag/Service2 Diag/Service2 Diag/Service2 Diag/Service

3 Calibration3 Calibration3 Calibration3 Calibration3 Calibration

2 Enter values2 Enter values2 Enter values2 Enter values2 Enter values

You now have four choices1 PV LRV1 PV LRV1 PV LRV1 PV LRV1 PV LRV

2 PV URV2 PV URV2 PV URV2 PV URV2 PV URV

3 PV USL3 PV USL3 PV USL3 PV USL3 PV USL

4 PV LSL4 PV LSL4 PV LSL4 PV LSL4 PV LSL

Choose PV LRVPV LRVPV LRVPV LRVPV LRV if performing a low point calibration.Choose PV URVPV URVPV URVPV URVPV URV if performing a high point calibration.

Edit the displayed value to equal the actual tank level,then:


SENDSENDSENDSENDSEND

OKOKOKOKOK

OKOKOKOKOK

1 Apply values1 Apply values1 Apply values1 Apply values1 Apply values

OKOKOKOKOK

You now have two choices:1 4mA1 4mA1 4mA1 4mA1 4mA

2 20mA2 20mA2 20mA2 20mA2 20mA

Choose 20mA if you are performing a high point calibration.Choose 4 mA if you are performing a low point calibration.

Continue: OKOKOKOKOK


3 EXIT3 EXIT3 EXIT3 EXIT3 EXIT

OKOKOKOKOK

HOMEHOMEHOMEHOMEHOME

Observe on the home screen that your PV URVPV URVPV URVPV URVPV URV or PV LRVPV LRVPV LRVPV LRVPV LRV valuehas been changed by the calibration procedure. You must manu-ally change these values back. Re-enter your desired PV URVPV URVPV URVPV URVPV URV

and PV LRVPV LRVPV LRVPV LRVPV LRV at this time.

This completes the first calibration point of the two-step process.Change the value on the C-box to correspond to the Pico faradsof a full tank and repeat the entire above procedure for a highpoint calibration.

A.7 BenchCalibration(if needed)


A-9

A p p x - A - s m h . p m d P a g e 0 o f 1 C r e a t e d 0 7 / 3 1 / 1 9 9 7 b y E L S R e v i s e d 0 8 / 0 7 / 2 0 0 2 1 2 : 2 1 P M

Bench Cal ibrat ion Informat ion Sheet

Mater ia l be ing Measured - F i l l ou t any known in format ion

N a m e o f M a t e r i a l : _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ L e v e l M e a s u r e m e n t In t e r f ace Measu remen tDie lec t r i c Cons tan t : (K) _ _ _ _ _ _ _ _ _ _ V e s s e l S h a p e Ver t i ca l Cyl inderConduc t iv i ty : (g) _ _ _ _ _ _ _ _ _ _ Hor izon ta l Cy l inde rOthe r : O t h e r _ _ _ _ _ _ _ _ _ _

Ins ta l la t ion Deta i l s N P T T h r e a d M o u n t F lange Mount - i f f l ange mount

B = _ _ _ _ _ _ i n c h e sE = _ _ _ _ _ _

A = _ _ _ _ _ _ i n c h e sH = _ _ _ _ _ _ i n c h e sD = _ _ _ _ _ i n c h e sH = _ _ _ _ _ i n c h e sI L = _ _ _ _ _ _ i n c h e s

Unless spec i f ied o therwise , ca l ib ra t ion va lues o fze ro and span capac i t ances wi l l be based on 4 -20mA being over the en t i re range of 'H ' . I f o therva lues a r e des i r ed spec i fy LRV and URV ininches .

L R V = _ _ _ _ _ i n c h e sU R V = _ _ _ _ _ i n c h e s

Calculat ions by Drexe lbrook

LRV ________ Calcu la ted Zero Capac i tance ________ pFURV ________ Ca lcu la ted Span Capac i tance ________ pFCalcu la ted by: ____________________ Date _________ P h o n e 800-527-6297

Fax 215-443-5117


A-10

Equipment Required:••••• UNIVERSAL III HARTTM Smart Transmitter••••• Model 275 HARTTM Calibrator••••• 24V Power source••••• Approximately 250 ohm total loop resistance••••• Two known process levels applied to the probe

This procedure uses an example of a point calibration forfullscale (20mA) = 35 ft. and zero (4mA) = 1.5 ft.

When a known level is available that is closer to an endpointthan a previous calibration point, it may be used as a newcalibration point to increase accuracy. This is done in thefollowing steps ENTER THE UPPER CALIBRATIONPOINT and/or ENTER THE LOWER CALIBRATIONPOINT with the new known level applied.

The order of execution between the upper and lower calibra-tion procedures does not matter. They can be done at differ-ent times.

NOTE:The procedure SET UP ZERO AND FULL SCALE LIMITSmust be performed to set up the vessel zero and fullscalelimits sometime prior to performing a point calibration. Thisinforms the UNIVERSAL III of the tank level limits and onlyneeds to be performed once for a given installation.

The examples in this procedure use the default units of feet.For other units, use the following procedure.

a) Connect the handheld communicator to the 4-20 mA loopper Figure 4-1.

b) Power the loop and proceed with following steps.

DO SEE FUNCTION COMMENTS

1/0 Online (Generic) Power On

1 Device Setup Select Device Setup

3 Basic Setup Select Basic Setup

2 PV Snsr unit Select PV Units

⇑ and ⇓ AVAILABLE UNITS Use the arrow keys to scroll through theavailable units and press [ENTER] when thedesired unit is displayed.

[ENTER] Basic Setup Select highlighted unit

Home Online (Generic) Desired units are now selected.

A.8 PointCalibration

A.8.1 Fine TuningCalibration

A.8.2 SelectingEngineeringUnits

NOTICE


A-11

ERROR MESSAGE: APPLIED PROCESS TOO HIGHThe applied process at 100% exceeds the capacitance rangesetting by at least 5% of span.Example: URV = 10 ft., Applied Process = 12 ft. will generatethis error.

ACTION: THE SPAN SELECT JUMPER MUST BE RAISED.This allows the process output at 100% to be within the rangeof the span range capacitance.

ERROR MESSAGE: SPAN TOO SMALLThe difference between the URV and LRV is less than 10% ofthe range.Example: For 0 to 10 ft. calibration points: LRV = 3.0 ft.,URV = 3.8 ft. will generate this error.

ACTION: THE CALIBRATION POINTS SHOULD BE FAR-THER APART.When the calibration points are too close together, the overallaccuracy of the calibration is adversely affected.

ERROR MESSAGE: UPPER RANGE VALUE TOO HIGHThe process capacitance at 100% exceeds the present capaci-tance range jumper setting.Example: For 0 to 10 ft. calibration: span select jumper = 100pF, point cal. LRV = 0 ft. @ 10 pF, URV = 7 ft. @ 90 pF gener-ates this error because the process would be 124 pF @ 10 ft.

ACTION: THE SPAN SELECT JUMPER MUST BE RAISED.This allows the process output at 100% to be within the rangeof the span range capacitance.NOTE: Respond to the prompt which is displayed immedi-ately after the error message that reads “Restore Device Value?”with <N>.

ERROR MESSAGE: UPPER RANGE VALUE TOO LOWThe Full scale projected from the entered URV and LRV isless than 5% of the present capacitance range jumper setting.Example: For 0 to 50 ft. calibration: span select jumper =1000 pF, LRV = 0 ft. @ 10 pF, URV = 40 ft. @ 80 pF generatesthis error.

ACTION: THE SPAN SELECT JUMPER MUST BE LOWERED.This allows the URV-LRV span to be greater than 5% of thecapacitance range jumper setting.NOTE: Respond to the prompt which is displayed immedi-ately after the error message that reads “Restore Device Value?”with <N>.

A.9 HandheldCalibratorError Messages

NOTICE

NOTICE


B-1

APPENDIX BAPPROVAL DRAWINGS


B-2

FM/CSA APPROVAL DRAWINGS


B-3



B-4



B-5

KEMA APPROVAL DRAWINGS


B-6

KEMA APPROVAL DRAWINGS

205 Keith Valley Road Horsham, PA 19044US Sales 1-800-553-909224 Hour Service 1-800-527-6297International + 215-674-1234Fax + 215-674-2731E-mail [email protected] www.drexelbrook.comAn ISO 9001 Certified Company

DREXELBROOK

Documents

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