Introducing NJK Precision Airflow Measuring Stations › wp-content › uploads › 2019 › 01 › NJK-Install… · Page2 Phone 517.759.1700 January,2019 NJK AirflowMonitoringStation

Introducing NJK Precision Airflow Measuring StationsA new and unique airflow measuring station that accuratelymeasures airflows at very low flow rates and can operate inphysically restrictive applications

Airflow MeasurementProducts

Installation and Operators Manual

Page1

Table of Contents

Items to be Received. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor Ordering (Deliverables) . . . . . . . . . . . . . . . . . . . . . . . NJK Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal Processing Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flow Module Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sensor Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Mounting (Sleeves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(Rain Hood) . . . . . . . . . . . . . . . . . . . . . . . . . . . (In Duct) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(Cut and Slide) . . . . . . . . . . . . . . . . . . . . . . . . .

Flow Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NJK Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wiring / Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Wiring / Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal Processing Unit Programming. . . . . . . . . . . . . . . . . . . Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Installation Check Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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January, 2019Page2 www.njkprecision.com - Phone 517.759.1700

NJK Airflow MonitoringStationInstallation and Operators Manual

All NJK Airflow Stations will be shipped with 4 extruded Flow Frame pieces (top, bottom, and 2 sides) along with 4 aluminum corner pieces. On smaller frame orders these pieces may all come assembled from the factory.

You will receive one Flow Measuring Module pre-mounted on one extruded piece of the Flow Frame per Flow Frame.

Each Flow Measuring Module will receive a factory cable that will be 25’ (Standard), or 50’, 75’ or 100’ feet in length if specially ordered for the airflow station.

All NJK Sensor Flow Frames will be delivered with four universal mounting brackets for the front and/or the rear of the airflow station for Flow Frame attachment purposes.

There will be a Signal Processing Unit (SPU-S or SPU-M). If ordered with a Signal Processing Unit – Single (SPU-S)there will be one SPU-S per sensor ordered. The Signal Processing Unit – Multi (SPU-M) may be intended for usewith several sensors.

When a SPU-M is delivered you will also receive a Multiple Sensor Hub. Along with this hub should be a six foot cable that connects the Multi Sensor Hub to the multiple airflow station Signal Processing Unit (SPU-M).

The Mechanical Package will contain an Assembly Instructionsdocument.

The Controls Package will contain an Installation and Operators Manual, along with an Automation Data Sheet relative to the job order.

*The NJK Flow Frame may be shipped completely assembled on some orders and will always be shippedassembled when mounted in a sheet metal sleeve. (Packaging will be slightly different).

NJK Flow Frames shipped unassembled. NJK Flow Frames shipped Assembled.


What You Should Receive: Open sensorassemblypackageand inspectcontents for any damage.

NJK Sensors will be shipped in a minimum of 3 Packages. The Controls Package, Mechanical Package, and Extrusion Package. The Controls Package, and Mechanical Package, may be combined into one larger package on smaller orders (or larger orders) while the Extrusion Packages will always shipsingly.

All NJK Packages shipped will be labeled with a completed label per package with one of the labels below that is applicable (assembled flow frames will have slightly different labels).


http://www.njkprecision.com/


NJK Precision Ordering:

NJK-02 Air Flow Measuring Station Deliverables:1. The NJK Sensor Flow Frame will usually ship disassembled and will require fieldassembly.

2. The NJK Flow Measuring Module will contain the sensing probe and signal transmitter. This will come with a factory cable that willbe 25 feet in length. Custom cables can be purchased at 50’, 75’, and 100’.

3. Ideally all NJK Flow Measuring Module will be mounted Internally on the NJK Sensor Flow Frame and will be located on the longerside of the assembly. If an alternate placement of the NJK Flow Measuring Module is desired this must be stated when the NJKSensor is ordered.

4. All NJK-02 Sensor orders will be delivered with an Assembly and Mounting Guide, a Building Automation Data sheet, and an Installation and OperatorsManual.

5. All NJK Sensor Flow Frames will be delivered with mounting brackets for both the front and rear of the sensor housing for sensorattachment purposes (unless ordered with an installation sleeve). The NJK Sensor Flow Frame can be secured from outside of theductwork by screwing into each sensor corner piece (1 inch from edge of damper framing ) with self-tapping screws. Screw-Through extrusion mounting can be used to secure the Flow Frame in place provided that the screw holes are moderately air-tight

6. NJK Sensors ordered with the smallest dimension being less than 16” and a sizing aspect ratio of 3 to 1 or less may use the smallersized sensor flow frame. Any sensor larger than that will be delivered as the larger sized NJK Sensor Flow Frame .

7. NJK Sensors ordered with the longest dimension being less than 10’ (120 inches) and a sizing aspect ratio of 3 to 1 or less will be astandard NJK Precision product order. Any sensors greater than 120 inches will be a special order and may require special mounting and locationconsiderations.

8. NJK Sensors required to fill a single opening with a sizing aspect ration of greater than 4 to 1 should be sold with two NJK SensorFlow Frames side by side with a Multi Sensor Processing Unit to cover signals from both Flow Frames unless optimal system flowdynamics can be achieved.

9. The NJK Sensor Flow Frame can be secured from outside of the ductwork by screwing into each sensor corner piece (1 inch fromedge of damper framing) with self-tapping screws. Screw- Through extrusion mounting can be used to secure the Flow Frame inplace provided that the screw holes are air-tight (unless ordered with an installation sleeve).

10. NJK Sensor Flow Frame Sizing is either the Plan and Specification duct size or the sensor inlet opening size. NJK will manufactureevery sensor ½” less than the size that is quoted (both height and width).

11. NJK Sensors installed in an open inlet such as an Outside Air Damper opening in a Rooftop Unit will require a 1 inch flange aroundthe inlet face of the NJK Sensor Flow Frame.

12. NJK Sensor Flow Frames, NJK Flow Measuring Module , NJK Signal Processing Unit, and NJK Multi Sensor Hubs all come with a threeyear product warranty.

January, 2019Page 4 www.njkprecision.com - Phone 517.759.1700


Sensor accuracy(CFM) Sensor repeatability Installed accuracy Responsetime Output Outputreading Humidityrange

+/- 0.5% ofreading+/- 0.5% ofreading+/- 2% ofreading0.5seconds1 - 10VDCCubic FeetperMinute0-95% RelativeHumidity

Working temperature (probe)Working temperature (elect.)Temperature Probe

Polycarbonate NEMA4X (IP-65) UL-94 HB

-25F –230F-13F –160F-25F –230F

WorkingrangeMeasurement:

50-3000ft/min Power supply Currentconsumption

Electricalconnections

General:24VAC/24VDCAC 75mA

ScrewterminalS.P.U. CasingProtectionclass


NJK Product Specifications

NJK Signal Processing Unit

Internal Terminal Connections for Power and Signal Internal RJ-45 Connection forSensor

Water Tight NEMA IP-65Housing On Board Sensor Fuse and Switch Water Tight Sensor Cable Access

High VisibilityDisplay

KeypadProgrammable:Sensor Area, Output Filter Processing

Signal Update Processing, Output Signal Offset Flow Correction Factor, Multiple Output Ranges

Minimum Flow, Multiple Sensor Inputs Grouping for Multiple Sensor Inputs

Simultaneous Display of four Sensors or Groups

NJK Flow Measuring Modules are available mounted inside (Internal) of the NJK Sensor Flow Frame or outside (External) to the NJK Sensor Flow Frame. These can also be mounted on the Height side of the NJK Sensor Flow Frame or on the Width side of the NJK Sensor FlowFrame.•Rain Hood and Assemble in Duct sensors will come with an Internally mounted NJK Flow Measuring Module .•Flow modules mounted inside of the flow frame and interior to ductwork will require an access door so that maintenance staff can readilyremove and replace the NJK Flow Measuring Module for routine cleaning or repair.




NJK Sensor Placement:

NJK Precision offers a new and unique airflow measuring station that can operate in physically restrictive and challenging applications. It accurately measures airflows at very low flow rates. Example placement of this unique, robust, and patented method of measuring airflow presentedbelow.




NJK Sensor Placement:



8inchO.D.

Order the NJK Sensor with a sheet metal sleeve (Duct MountedSensor):

Ductwork size on Plan and Specification Drawings

Standard “TDF”flange

8inchO.D.

Standard “TDF”flange

Order Frame directly mounted to the Air Handler: Cut “notch” in ductwork that will cover Flow Frame:

Ductwork

Attach ductwork to NJK Flow Frame tightly with sheet metalscrews

TopofAir Handler

Order the NJK Sensor with a sheet metal sleeve (Air Handler Mounted Flow Frames): :

TopofAir Handler

Opening size on Manufacturers Drawings

Minimum 7-1/4”wide

To ensure that the Sensor Module is properly sealed directly to the Flow Frame, no other ductwork or metal can be installed between the Sensor Moduleand the Flow Frame unless factory installed.

Do Not attempt to remount the NJK Sensor Module ontothe NJK Flow Frame by drilling holes in field added sheet metal and re-screwing the Sensor Module to ductwork even after aligning holes with the SensorFlow Frame. The added sheet

metal will create a gap in the mounting surface of the sensor module which cannot be properly sealed on site. This will

cause the sensor readings to read much less than they actuallyare.


The NJK Sensor Module will come Factory mounted on the NJK Flow Frame. Most often this will be mounted on the inside of the Flow Frame. In this type of installation there should be provisions provided to gain access to the Sensor Module through a duct opening such as an access panel or accessdoor.

In instances where later access to the Sensor Module may be a concern such as on inlet and outlet openings to an air handler where dampers exist the Sensor Module may be mounted on the exterior of the Flow Frame. While this will allow for ready access to the Sensor Module for cleaning, careful installation practices must be utilized to ensure that the Sensor Module remains properly sealed directly to the Flow Frame.


Mounting the NJK Air Flow Station


NJK MountingBrackets

1. Set the NJK Sensor Flow Frame inside rain hood and assure proper fit.

2. Flow direction arrow on NJK Sensor Flow Frame should match air flow in ductwork.

3. Secure NJK Sensor Flow Framefrom outside of the rain hood by screwing into

corners with self-tappingscrews.

4. Assure that all screws and the NJK Sensor Flow Frame do not interfere withdamper

operation or functionality.

5. Drill 3/4” hole in side of damper housing section and pull sensor wire fromtheNJK Flow Measuring Module to the outside of the air system.

Assemble in Duct Installation:(NJK Flow Measuring Module internally mounted)1. Bring NJK Sensor Flow Frame sensor pieces into duct area ensuring 2 straight extrusion pieces of one dimension and two of the other side wall dimension

(NJK Flow Measuring Module will need to be mounted on the extrusion piece with factory mounting holes) and thatyou have 4 die castcorner pieces.2. Assemble the four extrusion pieces togetherwith the 4 corners to form the NJK SensorFlow Frame sensor assembly on a slight angle in the

ductwork.3. Move the NJK Sensor Flow Frame sensor assembly into place and slide the 4 corners out to match the duct walls in the installation. Be careful not to slide

the corner pieces out more than 1-1/2” to avoid disassembling the sensor assembly.4. Flow direction arrow on NJK Sensor Flow Frame should match air flow in ductwork5. Secure the NJK Sensor Flow Frame from outside of ductwork into each sensor corner piece (1 inch from edge of ductwork) with self-tapping screws or

internally using the NJK MountingBrackets6. Drill 3/4” hole in side of ductwork directly left or right of cut-out section and pull sensor wire from the NJK Flow Measuring Module to the outside of the

air system (usinggrommetprovided).


Mounting the NJK Air Flow Station

Rain Hood Mount Installation: (NJK Flow Measuring Module internally mounted)

NJK-02 Ordering: Cut and Slide-In Option with Finish End PlateThe NJK Air Flow Measuring Station can be ordered with a sheet metal Finish End Plate for use with installations where ductwork is already in place and the NJK Sensor will be mounted inside of a cut opening in the ductwork. The opening will need to be 6 inches in height and the entire width of the duct where the sensor will bemounted.



••

Verify that there are two equal length side extrusion pieces and an equal length top and bottom piece.Verify that there are four aluminum corner pieces, a sensor probe assembly and transmitter, and an operator display panel.

Lay sensor bottom piece on its back on the floor, slide one corner piece into each end of the sensor bottom piece. (set screws in corner pieces may need to be loosened to allow the corner piece to slide into place). Tighten set screws snugly to extrusion piece.

Slide extrusion side piece onto sensor bottom piece corner (set screws in corner pieces may need to be loosened to allow the side piece to slide into place). Tighten set screws snugly to extrusion piece. Repeat for other side piece.

Flip top piece assembly onto side piece extrusions while setting corner pieces into side extrusion pieces (set screws in corner pieces may need to be loosened to allow the side pieces to slide into place). Tighten set screws snugly to extrusion piece.

The NJK Flow Measuring Module will be delivered factory mounted to the NJK Sensor Flow Frame. In the event that the NJK Flow Measuring Module is separated from the Sensor Flow Frame or during regular maintenance locate the pre-drilled mounting holes on the NJK Sensor Flow Frame, match the NJK Flow Measuring Module to the mounting holes in the NJK Sensor Flow Frame and secure the NJK Flow Measuring Module to the sensor frame by four screws(Included).

The NJK Flow Measuring Module must be mounted squarely on the Flow Frame to ensure optimal sampling port gasket sealing and proper sampling of the total air flow through the ductwork and into the Flow Measuring Module. Tighten all 4 screws equally to maintain an even contact between the Flow Measuring Module and the FlowFrame.

*Please note that air flow direction is marked on the NJK Flow MeasuringModule and will be labeled on the NJK Sensor Flow Frame near the pre-drilled mounting holes. The sensor air flow must be the same for both theNJK Flow Measuring Module and the NJK Sensor Flow Frame .


Assembling the NJK Air Flow Station

NJK Sensor Flow Frame AssemblyInstructions:

Open sensor assembly package and inspect contents for anydamage



Sampling Ports Replace Gaskets

The NJK Flow Measuring Module can be cleaned by removing the four mounting screws that attach the module to the Sensor Flow Frame and flushing the sampling port with either a small amount of air or electrical contact cleaner. Air pressures in excess of 110 psig may damage the Sensing Probe. It is recommended that the rubber sealing gaskets be replaced whenever the Flow Sensing Module is removed / replaced. Recommended cleaning interval is two years for a standard application.

Flow Measuring Module

The NJK Flow Measuring Module must be mounted squarely on the Flow Frame to ensure optimal sampling port gasket sealing and proper sampling of the total air flow through the ductwork and into the Flow Measuring Module. Tighten all 4 screws equally to maintain an even contact between the Flow Measuring Module and the Flow Frame. Hand tighten the screws only.

The NJK-02 Air Flow Sensor Flow Frame and Flow Measuring Module will need to be kept clear of debris that can inhibit the operation of the air flow sensor. In an unfiltered outdoor air application the Sensor Flow Frame will need to be free of leaves and or airborne items that can plug the sensor frame. Cottonwood and other such particulates will have very little effect on the operation of the flowframe.


NJK Product Maintenance:



NJK Multi Sensor Hub

RJ-45 connections located behind Multi Sensor Hub cover

All sensing connectionsto Building Automation wiring and 24 VAC power wiring will be done via the NJK Flow Measuring termination blocks in the NJK Signal Processing Unit only. The NJK Signal Module and the Signal Processing Unit will receive 24 VAC power from the control electrician. Processing Unit will be an The NJK Flow MeasuringModuleRJ-45 plug-in. will be powered from theNJK

Signal Processing Unit.The RJ-45 connection tothe Signal Processing Unitwillbe internal to the casing 24VAC Signal

Positive Positiveand accessible throughEMT An NJK Signal Processingknock-outs. (Liquid Tight Unit delivered with a single Signalcable fittings are available). 24VAC Flow Measuring Module will Neutral

Neutral output only to Channel1

All sensing connections to the An NJK Signal Processing Unit delivered for Multi Sensor Hub will be an RJ- multiple Flow Measuring Modules will be 45 plug-in. capable of outputs to any of fourChannels

Connections to the Multi Sensor Hub will be internal to the casing which will be delivered with capped ½”EMT knock-outs.

The connections in theMultiSensor Hub are non-specific + - + - + - + - and each can be usedfor any BAS Signal BAS Signal BAS Signal BAS Signal of thesensor inputs. Group 1 Group 2 Group 3 Group 4

Single Flow Measuring Module The NJK Sensor Cabling Ends are astandard RJ-45 configuration (as Below).

If Field Manufactured cables are chosentoFor single NJK Flow Measuring Module be used place each end as shownbelow.

(NJK Precision will notbe responsible for Field Cabling)applications, the NJK Signal ProcessingUnitwill receive a direct RJ-45 connection from 24VDC+

24 VDC-the NJK Flow MeasuringModule.

RS 485BRS 485A

For multiple NJK Flow Measuring Module applications, the NJK Signal Processing Unit can accept signals from multiple Flow Measuring Modules. This is done by connecting all NJK Flow Measuring Modules to one NJK Multi Sensor Hub enabling all sensors to connect to the Signal Processing Unit via one RJ-45cable..

All NJK Flow Measuring Modules will be delivered with an address to be used when adding to the Signal Processing Unit and the BAS System. On multiple Flow Measuring Module applications this address must be recorded as to air handling system and sensor location and will be used when programming the sensor at the NJK Signal Processing Unit .


NJK Wiring and Electrical



FlowSensing Modules

6 footStandard Length 300 foot Maximumoverall cable lengths (Additive)

Eight (8)Sensing ModuleCapacity

Three (3) Sensing Modules perGroup

24VAC/VDCBAS Signals

Field Wiring and Cabling:The NJK Signal Processing Unit-M can accept signals from multipleFlow Measuring Modules.

This is done by connecting all NJK Flow Measuring Modules to one NJK Multi Sensor Hub enabling all sensors to connect to the SignalProcessingUnitvia one RJ-45cable.

(All Flow Module cables 25’are factory supplied plenum rated 550MHz 23 AWG CAT6cables)

Signal Processing Unit-M Multi SensorHub

Plenum RatedCables

Non-Plenum Rated Cables


Wiring the NJK Signal ProcessingUnit

NJK Precision Cable LengthAn NJK Signal Processing Unit should never use more than one NJK Multi Sensor Hub per Signal Processing Unit.

Each Multi Sensor Hub can accept up to 3 Flow Measuring Modules per channel and 8 Flow Measuring Modules total.

Sensor Module signal certainty is dependent upon cable lengths, all connections, and sensor system communication traffic (sensor wiring configuration and sensor programming parameter settings).

Single cable lengths of up to 300 feet can be utilized on a single sensor, and SignalProcessing Unit-S.

Cable length from Multi Sensor Hub to Signal Processing Unit-M is standard 6’ and must not exceed 25 feet in length.

Cable length from Flow Sensing Module to Multi Sensor Hub must not exceed 100 feet in length.

Cumulative cable lengths of up to 300 feet can be safely used when wiring the NJK Signal Processing Unit-M and Multi Hub Unit.

NJK Signal Processing Unit flow signal to Building Automation System cable length will be the responsibility of the BAS Control Contractor.


25 footStandard Length


Display Area: The area of the ductwork where the Sensor Flow Frame is mounted, not the area of the Sensor Flow Frame. (Sensor Flow Frame is manufactured at a minimum to be ½ inch less in size than the interior of theductwork.

-To set up the Display Area of the NJK Precision Sensor: multiply the width of the ductwork housing the NJK Sensor by the height of the ductwork toobtain the duct area in square inches. Divide that number by 144 to obtain the sensor area in square feet. This will be the number that should beentered as Display Area on the Signal Processing Unit.

Flow Range: Input point is to be defined as a 1 to 10 VDC only and will directly reflect minimum and maximum airflow in Cubic Feet per Minute(CFM). Input point must be scaled as labeled on the NJK Air Flow Station label with 1 VDC representing the low flow (in Cubic Feet per Minute) and with 10 VDC representing the high flow (in Cubic Feet per Minute). This will be adjustable between 750, 1500, or 3000.

-The Flow Range of the output signal to the Building Automation System must match the point as defined in the BAS System. To determine theoutput signal Flow Range follow the steps to view the output range setting on the Signal Processing Unit. To determine the point as defined in theBuilding Automation system refer to the Controls Contractor. These two numbers must be setup the same or the SPU and the BAS will havedifferent airflow readings.

Output Gain: The flow multiplication factor as determined by the Test and Balance contractor to allow for proper air flow readings based on system dynamics and ductwork anomalies.

-This number will come with a factory setting of 1.0. This is a direct multiplication factor and is to be used only after airflow verificationhas been verified by a Test and Balance contractor and is designed to allow for exact tuning of the airflow signal to both the BuildingAutomation System and the Signal Processing Unit display.

Output Offset: The lower starting point of the signal scale. This can be a positive number or a negative number and should be verified and entered as found by the Test and Balance contractors readings. This will come defaulted as a setting of zero

-This setting can be used to relocate the lower end of the total output scale of NJK airflow reading. This is done by either raising orlowering the lower end (bottom) of the airflow scale, effectively “tightening up” the airflows input to output ratio / range. This is mostoften used when a Building Automation System does not have a readily selectable 1 to 10 VDC range and a 0 to 10 VDC range must beadapted for use.

Filter: The flow signal sensing rate from the actual measured signal as delivered to both the displayed value and the value sent to the building automation system (digital signal processing). This takes into account signal sensing output and timing.Available settings are None, 1, 2, 3, 4 , and 5.

-This setting is used to filter out extreme spikes in airflow signals as sensed across the full range of the NJK Sensor. The signal is a Digital SignalProcess (DSP) that takes into account all high and low readings and averages them with the more acceptable readings in the middle of the range of flow. The larger the setting number the more signal averaging and the more forgiving the airflows will be delivered (such as on awindy rooftop outside air application).

Update Rate: The rate of time in which the air flow is updated at the Signal Processing Unit for both the displayed value and the value sent to the building automation system. Update Rate can be 0, 15, 30, 60, 90, or 120 seconds.

-This setting is used to filter out extreme spikes over a time delayed signal to the BAS and SPU Display. The signal is a Digital Signal Process(DSP) that takes into account all airflow readings over a set time delay. The larger the setting number the more time delay and the moreforgiving the airflows will be delivered (such as on a windy rooftop outside air application).

Minimum Flow: The minimum flow (in Feet per Minute) at which the NJK Air Flow Measuring Station will begin to read air flow. This is used in situations where ambient air flows may be present when air handler is not running.

-This setting is used to eliminate false readings of airflow at minimal or unreliable times when dampers are supposedly closed or when fans areturned off and no air should be flowing. This setting is calibrated in Feet Per Minute and eliminates the NJK Airflow sensor from reporting anyairflows below that setpoint regardless of damper positions or fan operation. To set this parameter divide the lowest reporting airflow by theDisplay Area, and then by the Output Gain. This will give you the problematic reporting level in Feet Per Minute.Set this parameter slightly higher than the FPM number to eliminate false flow readings in no-flow conditions.



NJK Sensor Processing Unit Programming:


Name Sensor Group (Limit – 3 SensorsperGroup)

Press Down Button until Desired Sensor Group is highlighted.

Press Select Button to view Sensor Group Settings.

Highlight Group Settings, press Select button.

Select Group Name from None, Supply Air 1-4, Return Air 1-4, Outside Air 1-4, Exhaust Air 1-4 by pressing up / down arrows.

Press Right button to select Save or Left button to cancel.

Set Sensor GroupFunctionality

Press Down Button until Desired Sensor is highlighted., Press Select Button to view Sensor Group Settings.

Press down button to highlight Group Settings, Press Select.

Press down button to highlight Sensors, Press Select button to select between Sum or Average.

Press Right button to highlight Home.

Press Select button to return to main screen.

SetupSensors

Press right button to select Menu.

Press down button until Sensors is highlighted.

Press select button to add a Sensor.

Add Sensor U.U.I.D. (from Sensor Module). Press right button until Save is highlighted.

Press select button. Press select button again to save to Group 1 (or desired group).

Press right button until Home is highlighted, press Select.

All sensors in Group -1 will output to CH-1All sensors in Group -2 will output to CH-2All sensors in Group -3 will output to CH-3All sensors in Group -4 will output to CH-4

Multiple Flow MeasuringModules

Press Select button again to save to desired Group.

Use above Universally Unique Identifier when adding Sensors to Display. To locate Sensors by UUID Number refer to Troubleshooting Section of Installation and

Operations Manual – Page 16).

Display for Group -1



Displayfor Group-4

Flow Measuring Module Limitations

Each Multi Sensor Hub can accept up to 3 Flow Measuring Modules per Channel and 8 Flow Measuring Modules total. For cabling limitations please refer to the Cabling section on Page #10.

Locate Sensor Identificationnumbers

Refer to UUID Number from Install Electrician or Mechanical Sensor Installer.

Sensor UUID is located on top of Flow Measuring

Module.


NJK Sensor Processing Unit Programming:




NJK Sensor Processing Unit Programming:“To access each of the Settings below, follow these two steps first”

Press up/down buttons to select sensor group to be edited, press select button Press up/down buttons to select sensor to be edited, press select button

Setting the Display Area

1. Press up/down buttons until Display Area is shown2. Press Select button then press Up button. (Curser will Blink under number)3. Set Display Area to the NJK Sensor Area (Sq Ft) by adjusting settings using up and down buttons. Use left and right buttons to move

curser. Use reset button to clear entry.4. Press Right button until Save is highlighted5. Press Select button to return to Settings menu

Setting the Output Flow Range (Building Automation High Scale):

1. Press up/down buttons until Flow Range is shown, press Select button2. Press up button to highlight ranges, Press Select button3. Set Output Scaling to desired Scale (750, 1500, or 3000 (FPM)) by adjusting settings using up and down buttons. Press Right button

to highlight Save4. Press Select button to return to Settings menu.

Setting the Signal Output Offset:

1. Press up/down buttons until Offset is shown, press Select button2. Press up button to highlight settings, Press Select button3. Set Offset to determined amount by adjusting settings using up and down buttons. Use left and right buttons to move curser, press

Right button to highlight Save4. Press Select button to return to Settings menu.

Setting the Signal Output Gain (CorrectionFactor):

1. Press up/down buttons until Output Gain is shown, press Select button2. Press up button to highlight settings, Press Select button3. Set Gain to desired Correction Factor (a percentage of 1.0,) by adjusting settings using up and down buttons. Use left and right

buttons to move curser. Press Right button to highlight Save4. Press Select button to return to Settings menu.

Setting the Signal Output Filter:

1. Press up/down buttons until Filter is shown, press Select button2. Press up button to highlight settings, Press Select button3. Set Filtering adjustment as desired (None, 1, 2, 3, 4 or 5 (Lowest to Highest), Press Right button to highlight Save4. Press Select button to return to Settings menu.

Setting the Signal Update Rate:

1. Press up/down buttons until Update Rate is shown, press Select button2. Press up button to highlight settings, Press Select button3. Set desired Update Rate (0, 15, 30, 60, 90, or 120 (Seconds)), Press Right button to highlight Save4. Press Select button to return to Settings menu

Setting the Minimum Flow:

1. Press up/down buttons until Minimum Flow is shown, press Select button2. Press up button to highlight settings, Press Select button3. Set Minimum Flow to Sensor minimum flow in Feet Per Minute by adjusting settings using up and down buttons. Use left and

right buttons to move curser, press Right button to highlight Save. (Factory set to 35 FPM)4. Press Select button to return to Settings menu

• Press Select button to return to display reading or press up/down buttons to continue w/settingsJanuary, 2019Page16 www.njkprecision.com - Phone 517.759.1700


All references in this manual are subject to change due to product advancements or operational changes as deemed necessary.


NJK Troubleshooting:

Locate Sensor Identification numbers

To located connected Flow Sensing Module UUID address through the Signal Processing Unit each connected Flow Sensing Module must be plugged into Multi Sensor Hub individually. The Signal Processing Unit will only recognize

one non-addressed Flow Sensing Module at a time while in the Get Sensor UUID mode.

Get Sensor UUID:

Press right button to select menu.

Press Select Button to enter Display Settings screen.

Press up / down buttons to highlight Sensors, press Select.

Press up / down buttons to highlight Get Sensor UUID, press Select.

Press up / down buttons to highlight Get UUID, press Select twice.

Connected sensor will display reading: Sensor Found: (Sensor I D Number).

Use above Sensor I D Number when adding Sensing Modules to Display.

Press Right button until Home is highlighted, press Select.

Repeat above steps for each Sensing Module connected to Signal Processing Unit and Multi Sensor Hub.

NJK Cabling:

An NJK Signal Processing Unit should never use more than one NJK Multi Sensor Hub per Signal Processing Unit.

The Multi Sensor Hub can accept up to 3 Flow Measuring Modules (FMMs) per Channel and 8 FMMs total.

Sensor Module signal certainty is dependent upon cable lengths, all connections, and sensor system communication traffic (sensor wiring configuration and sensor programming parametersettings).

Single cable lengths of up to 300 feet can be utilized on a single Flow Measuring Module and Signal Processing Unit-S.

Cumulative cable lengths of 300 feet can be safely used when wiring the NJK Signal Processing Unit-M and Multi Hub Unit.

NJK Signal Processing Unit flow signal to Building Automation System cable length will be the responsibility of the BAS Control Contractor.



Initial Flow Measuring Modules are properly mounted

Signal Processing Unit is properly mounted

Signal Processing Unit is properly wired

Flow Measuring Modules are wired

Flow Measuring Modules are properly named

Sensors are programmed to proper input /output

Sensor sizes are properly entered

Test and Balance Contractor has completed

NJK Precision installation form is completed.

Technician Name & Company Below Date Below

January, 2019

Mechanical System

Job NameLocation

Scan or e-mail this completed document to your Sales Representativeor send to "[email protected]", or send picture of this document to 517-759-1700

Sensor Location# of Sensors (Total)

Controls Installation (Electrical, Building Automation)

(One checksheet required per HVAC system)

Notes:

Signal Processing Unit communicating with all modules.

Flow Measuring Module addressing is recorded as per plans

Installation Checklist and Warranty Registration

AHU and Location Se

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Sens

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in

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Sensor 1

Sensor 2

Sensor 3

Sensor 4

Sensor 5

Sensor 6

Sensor 7

Sensor 8

Sensor 9

Sensor 10

Sensor 11

Sensor 12

Sensor 13

Sensor 14

Sensor 15

Notes:

Mechanical Installation (NJK Sensor Flow Frame) Scan or e-mail this completed document to your Sales Representative or send to:

Installation Checklist and Warranty Registration "[email protected]", or send picture of this document to 517-759-1700

Flow

Fra

me

is fr

ee o

f ad

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or

sam

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Sens

or F

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me

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ithou

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Job Name

January, 2019

NJK Sensor Installation Checklist

Date Initials

Project NameLocation

Mech. Systems

Sens

or F

low

Fra

me

inst

alle

d in

pro

per

dire

ctio

n

Flow

Fra

me

is in

des

ired

duct

wor

k pe

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Sensor Flow Frame is securely mounted (Choose 1)

Flow

Mea

surin

g M

odul

e is

ac

cess

ible

(Int

erna

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acce

ss d

oors

)

Sens

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Flow

Mea

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(Ext

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Airflow MeasurementProducts

402 East Haven StreetEaton Rapids, MI 48827 [email protected]

(517) 759-1700

©2019 NJK

mailto:[email protected]

Documents

Introducing NJK Precision Airflow Measuring Stations › wp-content › uploads › 2019 › 01 › NJK-Install… · Page2 Phone 517.759.1700 January,2019 NJK AirflowMonitoringStation