Emerson Micro Motion 5700 Configuration And Use Manual page 199

Configuration and Use Manual
MMI-20029769
• Line pressure too low
• The flow rate is too high for the installation
• Pipe diameter too small
• Contaminants or suspended solids in the process gas
• Contaminants or suspended solids in the process fluid
• Vibration in the pipeline
• Erosion or corrosion
Recommended actions
1. Check your process conditions against the values reported by the device.
2. Increase the density damping value.
3. Decrease the flow rate.
4. Check for two-phase flow.
5. Ensure that line pressure or sample pressure meets installation requirements.
6. Increase back pressure to minimize bubble formation.
7. Minimize vibration in the pipeline.
8. Increase the pipe diameter.
9. Install a flow control method (bypass, flow chamber, expander, etc.).
10. Perform Smart Meter Verification.
17.6.2 Inaccurate density reading
Cause
• Problem with process fluid
• Incorrect density calibration factors
• Wiring problem
• Incorrect grounding
• Two-phase flow
• Plugged or coated sensor tube
• Incorrect sensor orientation
• RTD failure
• Physical characteristics of sensor have changed
Recommended actions
1. Check the wiring between the sensor and the transmitter.
2. Check the grounding of all components.
3. Check your process conditions against the values reported by the device.
4. Ensure that all of the calibration parameters have been entered correctly. See the sensor tag or the
calibration sheet for your meter.
Configuration and Use Manual
Troubleshooting
March 2019
199