Emerson Process Management 2400S Manuel D’Utilisation

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Erratic non-zero flow rate under 
no-flow conditions

Leaking valve or seal

• Check pipeline.

Slug flow

• See Section 11.14.

Plugged flow tube

• Check drive gain and tube frequency. 

Purge the flow tubes.

Incorrect sensor orientation

• Sensor orientation must be 

appropriate to process fluid. See the 
installation manual for your sensor.

Wiring problem

• Check the sensor circuitry. See 

Vibration in pipeline at rate close to 
sensor tube frequency

• Check environment and remove 

source of vibration.

Damping value too low

• Check configuration. See Section 8.4.

Mounting stress on sensor

• Check sensor mounting. Ensure:

- Sensor is not being used to support 

pipe.

- Sensor is not being used to correct 

pipe misalignment.

- Sensor is not too heavy for pipe.

Sensor cross-talk

• Check environment for sensor with 

similar (±0.5 Hz) tube frequency.

Erratic non-zero flow rate when flow 
is steady

Slug flow

• See Section 11.14.

Damping value too low

• Check configuration. See Section 8.4.

Plugged flow tube

• Check drive gain and tube frequency. 

Purge the flow tubes.

Excessive or erratic drive gain

• See Section 11.20.3

Output wiring problem

• Verify wiring between transmitter and 

receiving device. See the installation 
manual for your transmitter.

Problem with receiving device

• Test with another receiving device.

Wiring problem

• Check the sensor circuitry. See 

Inaccurate flow rate

Bad flow calibration factor

• Verify characterization. See 

Inappropriate measurement unit

• Check configuration. See 

Bad sensor zero

• Rezero the flowmeter or restore the 

factory zero or prior zero. See 
Section 10.5.

Bad density calibration factors

• Verify characterization. See 

Bad flowmeter grounding

• See Section 11.7.3.

Slug flow

• See Section 11.14.

Wiring problem

• Check the sensor circuitry. See 

Process variables problems and remedies continued