-
Lab Part 1, ppLab Part 1, pp-- 11
EAB4223/EEB5223 INDUSTRIAL AUTOMATION & CONTROL SYSTEMS
Laboratory: Part 1
At the end of this laboratory activities, students should be
able to:
1. design a system to measure pressure/temperature/flow/level,
monitor and control, using transmitter(s), electronic recorder,
electronic controller and electronic valve positioner.
2. develop a loop drawing for a simple control loop, consisting
of the various necessary instruments, like transmitter, recorder,
controller and valve positioner.
3. perform calibration and configuration on the appropriate
instruments (HART communicator, pressure transmitter, electronic
recorder and electronic controller).
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Lab Part 1, ppLab Part 1, pp-- 22
EEB5223 INDUSTRIAL AUTOMATION & CONTROL SYSTEMS
Laboratory: Part 1
q Calibration of a pressure transmitter (PT)
q Calibration of an RTD / thermocouple (TT)
q Configuration of a controller and a recorder
q Loop interconnection of a single loop controlled using PT or
TT, electronics recorder,
electronic controller, a valve and valve positioner.
Demonstration of a operational system.
Lab report related to the above.
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Lab Part 1, ppLab Part 1, pp-- 33
Transmitters
Pressure/Level/Flow transmitter Temperature transmitter
Note: A transmitter has to be calibrated based on the value of
input variable being measured, and the output value of the variable
to be transmit to other devices in the control loop.
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Lab Part 1, ppLab Part 1, pp-- 44
HART Communicator use a calibration tool for transmitters
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Lab Part 1, ppLab Part 1, pp-- 55
Calibrationq A pressure transmitter is to be calibrated. The
input pressure range is 30 to 150 psi. The output from the
transmitter is 4 to 20 mA. Develop a calibration procedure to
calibrate the transmitter. Calculate the settings and output for
each reading that needs to be taken. Refer to instruction manual on
the detail calibration procedure.
20.0 mA150 psi1005
16.0 mA120 psi754
12.0 mA90 psi503
8.0 mA60 psi252
4.0 mA30 psi01
PERCENT DIFFERENCE
ACTUAL OUTPUT CURRENT
CALCULATED OUTPUT CURRENT
INPUT PRESSUREINPUT PRESSURE PERCENTAGE
CALIBRATION READING
4.0 mA30 psi05
8.0 mA60 psi254
12.0 mA90 psi503
16.0 mA120 psi752
20.0 mA150 psi1001
PERCENT DIFFERENCE
ACTUAL OUTPUT CURRENT
CALCULATED OUTPUT CURRENT
INPUT PRESSUREINPUT PRESSURE PERCENTAGE
CALIBRATION READING
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Lab Part 1, ppLab Part 1, pp-- 66
Miscellaneous instruments:
Digital Multimeter
Decade resistance box used whenever requires voltage value of 1
to 5V.DC Power supply
supplying 24VDC to the devices
Calibrator can be set to source and sink current, voltage,
temperature.
Distributor -supplies power to a two-wire transmitter and
converts the 4 to 20 mA DC transmitter signal current to two 1 to 5
V DC output signals.
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Lab Part 1, ppLab Part 1, pp-- 77
Single station controller requires configuration
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Lab Part 1, ppLab Part 1, pp-- 88
Recorder requires configuration
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Lab Part 1, ppLab Part 1, pp-- 99
Advanced Calibration Bench
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Lab Part 1, ppLab Part 1, pp-- 1010
PRESSURETRANSMITTER
HL
Gauge
Gauge
20 psi (SUPPLY)
3 - 15 psi(OUTPUT)
(INPUT) 0 - 100 inch W.C.
20 psi (SUPPLY)
REGULATOR
VENTED toAtmosphere
Sample hook-up diagram for calibration of Pneumatic DP
transmitter
A CALIBRATION HOOK UP DIAGRAM
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Lab Part 1, ppLab Part 1, pp-- 1111
PRESSURETRANSMITTER
HL
Gauge
(INPUT) 0 - 100 inch W.C.
20 psi (SUPPLY)
REGULATOR
VENTEDto
Atmosphere
-
+
+ -
-
+
POWERSUPPLY24 V DC
MULTIMETER
4 - 20 mA
Sample hook-up diagram for calibration of Electronic DP
transmitter
A CALIBRATION HOOK UP DIAGRAM
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Lab Part 1, ppLab Part 1, pp-- 1212
A loop interconnection of a single loop system for monitoring
and controlling
Recorder
Controller
Final control element
PT
PowerSupply
Controller
Valve
- +
+-
Recorder -
+
-+
-+
+-
DC Power supply
Transmitter
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Lab Part 1, ppLab Part 1, pp-- 1313
Lab activities
q Calibration of a pressure transmitter (PT)
q Calibration of an RTD / thermocouple (TT)
q Configuration of a controller and a recorder
q Loop interconnection of a single loop controlled using PT or
TT,
electronics recorder, electronic controller, a control valve
and
valve positioner.
Experiment 1Calibration/Con
figuration
Experiment 2Calibration/Con
figuration
Loop connection/controller
implementation
Lab report
Week 3 - 4 Week 5 - 7 Due week 9
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Lab Part 1, ppLab Part 1, pp-- 1414
Lab reportONE lab report (per group) on all activities (field
instruments calibration, configuration of controller and recorder,
P&ID and loop diagram). Due week 9.
Table of contentsMain experiment-Loop drawing Objective of
experiment Equipment names, types and serial numbers Circuit
diagrams of loop drawing Pictures of instruments and loop wiring
Data tables and graphs Analysis of results Estimate cost listing of
equipments ConclusionsAppendixoExperiment 1 Objective of experiment
Equipment names, types and serial
numbers Circuit diagrams of loop drawing Data tables and graphs
(if applicable) Analysis of results (if applicable)
ConclusionsoExperiment 2 (similar to Experiment 1)oExperiment 3
(similar to Experiment 1)
Note:
The purpose of a report is to inform. Another engineer should be
able to replicate your results with the information given. Try to
impart the required information as concisely as possible.
End of notes on Lab Part 1End of notes on Lab Part 1
