Check Grounding; Perform Loop Tests - Emerson Micro Motion 4200 Configuration And Use Manual

Configuration and Use Manual
MMI-20048166

15.14 Check grounding

A sensor and the transmitter must be grounded.
Prerequisites
You will need an:
• Installation manual for your sensor
• Installation manual for your transmitter (remote-mount installations only)
Procedure
Refer to the sensor and transmitter installation manuals for grounding requirements and instructions.

15.15 Perform loop tests

A loop test is a way to verify that the transmitter and the remote device are communicating properly. A loop
test also helps you know whether you need to trim mA Outputs.
Prerequisites
• Before performing a loop test, configure the channels for the transmitter outputs that will be used in your
application.
• Follow appropriate procedures to ensure that loop testing will not interfere with existing measurement
and control loops.
15.15.1 Perform loop tests using the display
Procedure
1. Test the mA output(s).
a) Choose Menu > Service Tools > Output Simulation and select the mA output to test.
b) Set Simulation Value to 4 .
c) Start the simulation.
d) Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct
the discrepancy by trimming the output.
e) Choose New Value.
f) Set Simulation Value to 20 .
g) Start the simulation.
h) Read the mA current at the receiving device and compare it to the transmitter output.
The readings do not need to match exactly. If the values are slightly different, you can correct
the discrepancy by trimming the output.
i) Choose Exit.
Configuration and Use Manual
Troubleshooting
April 2019
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