Emerson Micro Motion 2500, Configuration And Use Manual

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Problem Possible causes Recommended actions
Temperature reading
slightly different from
process temperature • Sensor temperature not yet equalized
• Sensor leaking heat
• If the error is within the temperature speci-
fication for the sensor, there is no prob-
lem. If the temperature measurement is
outside the specification, contact custom-
er support.
• The temperature of the fluid may be
changing rapidly. Allow sufficient time for
the sensor to equalize with the process flu-
id.
• Perform RTD resistance checks and check
for shorts to case (see
Section 12.30.1 ).
• The electrical connection between the RTD
and the sensor may be damaged. This may
require replacing the sensor.
Inaccurate tempera-
ture data from exter-
nal device • Wiring problem
• Problem with input configuration
• Problem with external device
• Problem with input configuration
• Verify the wiring between the transmitter
and the external device.
• Verify that the external device is operating
correctly.
• Verify the configuration of the tempera-
ture input.
• Ensure that both devices are using the
same measurement unit.
12.6 Milliamp output problems
Milliamp output problems and recommended actions Table 12-2:
Problem Possible causes Recommended actions
No mA Output • Wiring problem
• Circuit failure
• Check the power supply and power supply
wiring.
• Verify the output wiring.
• Check the Fault Action settings.
• Verify channel configuration for the affec-
ted mA Output.
• Contact customer support.
Loop test failed • Power supply problem
• Wiring problem
• Circuit failure
• Incorrect internal/external power configu-
ration
• Check the power supply and power supply
wiring.
• Verify the output wiring.
• Check the Fault Action settings.
• Verify channel configuration for the affec-
ted mA Output.
• Contact customer support.
Troubleshooting
174 Micro Motion Model 2500 Transmitters with Configurable Input/Outputs