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Reference Manual
00809-0100-4444, Rev AC
Section 9: Troubleshooting
January 2015
Troubleshooting
Table 9-3. Advanced Meter Verification Messages
Error message Potential cause Corrective action
8714i Failed
Transmitter calibration verification
test failed
• Verify pass/fail criteria
• Rerun SMART
™
Meter Verification (8714i) under no flow conditions
• Verify calibration using 8714 Calibration Standard
• Perform digital trim
• Replace electronics board
Sensor calibration test failed
• Verify pass/fail criteria
• Rerun Smart
™
Meter Verification (8714i)
• Perform sensor tests - see Table 9-8 on page 168
Sensor coil circuit test failed
• Verify pass/fail criteria
• Rerun Smart
™
Meter Verification (8714i)
• Perform sensor tests - see Table 9-8 on page 168
Sensor electrode circuit test failed
• Verify electrode resistance has a baseline (signature) value from a full
pipe baseline
• Verify test condition was selected properly
• Verify pass/fail criteria
• Rerun Smart
™
Meter Verification (8714i)
• Perform sensor tests - see Table 9-8 on page 168
4-20 mA loop
verification failed
Analog loop not powered
• Check 4-20 mA internal/external loop power switch - see
Internal/external analog power on page 42
• Check external supply voltage to the transmitter
• 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
Verification Error
Transmitter calibration verification
test failed
• Verify pass/fail criteria
• Run manual Smart Meter Verification (8714i) under 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 Table 9-8 on page 168
Sensor coil circuit test failed
• Run manual Smart
™
Meter Verification (8714i)
• Perform sensor tests - see Table 9-8 on page 168
Sensor electrode circuit test failed
• Run manual Smart
™
Meter Verification (8714i)
• Perform sensor tests - see Table 9-8 on page 168
• Verify electrode resistance has a signature value from a full pipe
baseline
Simulated Velocity Out of
Spec
Unstable flow rate during the
verification 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 Calibration 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 frequency.
• Perform an electronics trim using the 8714
• If the electronics trim doesn't correct the issue, replace the electronics
Coil Resistance Out of
Spec
Moisture in the terminal block of the
sensor or shorted coil
• Perform sensor tests - see Table 9-8 on page 168
• 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 Table 9-8 on page 168
• If the problem persists, replace the sensor
Calibration shift caused by heat
cycling or vibration
• Perform sensor tests - see Table 9-8 on page 168
• If the problem persists, replace the sensor