Installation
Hardware Installation and Maintenance Manual 3
–19
6. If desired, repeat by setting the 4-20 mA % Test parameter; R, to
any value between 0 and 100 to confirm that the output, i, agrees
with i=R(20 mA - 4 ma) + 4 mA.
7. When finished, reset the 4-20 mA % Test parameter to 101.
8. Press # and 1 to return to Normal Mode.
Totestandadjust4‐20mAzeroandspan(AnalyzerAorB)
1. For Analyzer A, press #5 (Mode 5) and note the 4-20 mA Test
parameter setting displayed on the analyzer.
a. Adjust the potentiometers on the end of the board to change the
zero and span readings. Refer to Figure 3–8 on page 3–17.
2. For Analyzer B, press # 5 (Mode 5) and note the 4-20 mA % Test
parameter setting displayed on the analyzer.
a. Adjust the potentiometers on the end of the board to change the
zero and span readings. Refer to Figure 3–8 on page 3–17.
3. Press # and 1 to return to Normal Mode.
For more information on the analyzer programming, refer to the Firmware
Operator’s Manual.
Ethernet connection (Optional)
Refer to the appropriate Firmware for setting up the optional Ethernet
connection if installed.
Connecting the Gas Lines
Once you have verified that the analyzer is functional and that the analyzer
circuit is de-energized, you are ready to connect the supply and return lines.
All work should be performed by technicians qualified in pneumatic tubing.
Process samples may contain hazardous material in potentially
flammable and/or toxic concentrations. Personnel should have a
thorough knowledge and understanding of the physical properties
and safety precautions for the sample contents before installing
the SCS.
<TEST 4-20MA MODE>
4-20 mA output is at
0.0% or 4.0mA
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