Quick start with the Field Communicator
It should vary between 0 mA or 4 mA and 20 mA according to the mass flow rate of your process.
4.5
Perform a loop test
A loop test is a way to verify that the transmitter and the receiving device are communicating properly.
A loop test also helps you know whether you need to trim mA outputs. Performing a loop test is not
a required procedure. However, Micro Motion recommends performing a loop test for every input or
output available on your transmitter.
Procedure
1.
Test the mA output.
a.
Press
Service Tools→Simulate→Simulate Outputs→mA Output Loop Tests
, and select
4 mA
.
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.
Select
20 mA
.
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.
2.
Test the secondary mA output.
Press
Service Tools→Maintenance→Simulate Outputs→mA Output 2 Loop Test
, and repeat the loop
test for the secondary mA output.
3.
Test the frequency output.
Note
If the Weights & Measures application is enabled on the transmitter, it is not possible to perform a
loop test of the frequency output, even when the transmitter is unsecured.
a.
Press
Service Tools→Simulate→Simulate Outputs→Frequency Output Test
, and choose the
frequency output level.
b.
Read the frequency signal at the receiving device and compare it to the transmitter output.
c.
Choose
End
.
4.
Test the discrete output.
a.
Press
Service Tools→Simulate→Simulate Outputs→Discrete Output Test
.
b.
Choose
Off
.
c.
Verify the signal state at the receiving device.
d.
Choose
On
.
e.
Verify the signal state at the receiving device.
54
Micro Motion 9739 MVD Transmitters
Содержание Micro Motion 9739 MVD
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Страница 207: ...Appendices and reference ...
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Страница 230: ...Using the transmitter display Figure C 4 Offline menu version information 224 Micro Motion 9739 MVD Transmitters ...
Страница 231: ...Using the transmitter display Figure C 5 Offline menu configuration units and I O Configuration and Use Manual 225 ...
Страница 233: ...Using the transmitter display Figure C 7 Offline menu configuration display Configuration and Use Manual 227 ...
Страница 234: ...Using the transmitter display Figure C 8 Offline menu Simulation loop testing 228 Micro Motion 9739 MVD Transmitters ...
Страница 236: ...Using the transmitter display Figure C 10 Offline menu Zero 230 Micro Motion 9739 MVD Transmitters ...
Страница 239: ...Using ProLink II with the 9739 MVD transmitter Figure D 2 Configuration menu Configuration and Use Manual 233 ...
Страница 241: ...Using ProLink II with the 9739 MVD transmitter Figure D 4 Configuration menu continued Configuration and Use Manual 235 ...
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Страница 245: ...Using the Field Communicator with the 9739 MVD transmitter Figure E 2 Overview menu Configuration and Use Manual 239 ...