Perform Loop Tests Using Prolink Iii - Emerson MICRO MOTION HFVM Series Configuration And Use Manual

Troubleshooting
Procedure
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.
f. At the transmitter, activate Select.
Postrequisites
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10.4.2

Perform loop tests using ProLink III

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
Test the mA outputs.
a. Choose Device Tools > Diagnostics > Testing > mA Output 1 Test or Device Tools > Diagnostics >
Testing > mA Output 2 Test.
b. Enter 4 in Fix to:.
c. Click Fix mA.
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If the mA output readings are within 200 microamps of each other, you can correct
this discrepancy by trimming the output.
If the discrepancy between the mA output readings is greater than 200 microamps,
or if at any step the reading was faulty, verify the wiring between the transmitter
and the remote device, and try again.
Micro Motion ® Heavy Fuel Viscosity Meters (HFVM) Viscomaster ™