If there is no power, contact customer service.
14.5 Check grounding
The sensor and the transmitter must be grounded.
Procedure
Refer to the sensor and transmitter installation manuals for grounding requirements and instructions.
14.6 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.
Related information
Perform loop tests using the display
Perform loop tests using ProLink III
Perform loop tests using a field communicator
14.6.1 Perform loop tests using the display
Prerequisites
Before performing a loop test, configure the channels for the transmitter inputs and 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.
Procedure
1. Test the mA outputs.
a) Choose OFFLINE MAINT → SIM → AO1 SIM or OFFLINE MAINT → SIM → AO2 SIM, and select a
low value, e.g., 4 mA.
Dots traverse the display while the output is fixed.
b) 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.
c) At the transmitter, activate Select.
d) Scroll to and select a high value, e.g., 20 mA.
Dots traverse the display while the output is fixed.
e) 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.
Troubleshooting Configuration and Use Manual
March 2021 MMI-20020954
124 Micro Motion Gas Specific Gravity Meters (SGM)
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