Concentration Measurement Problems - Emerson Micro Motion 5700 Configuration And Use Manual

Configuration and Use Manual
MMI-20039472
3. Ensure that the valve and channel are powered.
16.3.4 Batch totals are inaccurate
Cause
• Batch target is incorrect
• AOC is inaccurate
• Flow measurement needs adjustment
Recommended actions
1. Verify that the correct batch preset is active.
2. Verify that the batch target is set correctly.
3. If you have recently changed the batch target, run a few batches and wait for the AOC value to adjust.
4. Repeat AOC calibration.
5. Adjust the fixed AOC value.
6. Compare the batch total to a scale reading.
16.3.5 ts BatchRepeatNotSatis
Cause
• AOC is inaccurate
• Inconsistent or leaking valve
• Process is unstable
Recommended actions
1. Inspect the valve and replace if necessary.
2. Repeat AOC calibration.
3. Ensure that line pressure is stable.
4. Ensure that bowl level is approximately constant.
5. Ensure that the pump is not causing unstable flow.

16.4 Concentration measurement problems

16.4.1 Significantly incorrect CM after loading matrix
Cause
The wrong temperature or density unit was configured when the matrix was loaded.
Recommended actions
Set the temperature and density units to the units used when the matrix was built, then reload the matrix.
For custom matrices, contact customer support.
Configuration and Use Manual
Troubleshooting
June 2019
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