Emerson Rosemount 8732EM, Reference Manual

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Advanced Meter Verification Messages
(continued)
Table 12-3:
Error message Potential cause Corrective action
Check for parallel paths in the current loop
Transmitter failure Perform transmitter self test
Perform manual analog loop test and D/A trim if
necessary
Replace the electronics board
Continuous Meter Verifi-
cation Error Transmitter calibration verification
test failed Verify pass/fail criteria
Run manual SMART Meter Verification (8714i) un-
der no flow conditions
Verify calibration using 8714D Calibration Standard
Perform digital trim
Replace electronics stack
Sensor calibration test failed Run manual SMART Meter Verification (8714i)
Perform sensor tests - see Section 12.7
Sensor coil circuit test failed Run manual SMART Meter Verification (8714i)
Perform sensor tests - see Section 12.7
Sensor electrode circuit test failed Run manual SMART Meter Verification (8714i)
Perform sensor tests - see Section 12.7
Verify electrode resistance has a signature value
from a full pipe baseline
Simulated Velocity Out
of Spec Unstable flow rate during the verifica-
tion test or noisy process Run manual transmitter verification test with no
flow and a full pipe
Transmitter drift or faulty electronics Verify transmitter electronics with 8714D Calibra-
tion Standard. The dial on the 8714D should be set
to 30 ft/s (9.14 m/s). The transmitter should be set
up with the nominal calibration number
(1000015010000000) and 5 Hz coil drive frequen-
cy.
Perform an electronics trim using the 8714
If the electronics trim doesn't correct the issue, re-
place the electronics
Coil Resistance Out of
Spec Moisture in the terminal block of the
sensor or shorted coil Perform sensor tests - see Section 12.7
If the problem persists, replace the sensor
Coil Signature Out of
Spec Moisture in the terminal block of the
sensor or shorted coil Perform sensor tests - see Section 12.7
If the problem persists, replace the sensor
Calibration shift caused by heat cy-
cling or vibration Perform sensor tests - see Section 12.7
If the problem persists, replace the sensor
Electrode Resistance Out
of Spec Moisture in the terminal block of the
sensor Perform sensor tests - see Section 12.7
If the problem persists, replace the sensor
Troubleshooting
Reference manual 161