Emerson Series 3000 MVD Manuel D’Utilisation

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Erratic non-zero flow rate under 
no-flow conditions

RF interference

Check environment for RF interference. 
See Section 22.11.5.

Wiring problem

Verify all sensor-to-transmitter wiring 
and ensure the wires are making good 
contact.

Incorrectly grounded 9-wire cable 
(remote core processor with remote 
transmitter installations)

Verify 9-wire cable installation.

Vibration in pipeline at rate close to 
sensor tube frequency

Check environment and remove source 
of vibration.

Improper sensor grounding (T-Series 
sensors only)

Verify that the sensor is grounded to 
earth ground.

Leaking valve or seal

Check pipeline.

Inappropriate measurement unit

Check configuration. See 
Section 22.13.

Inappropriate damping value

Check configuration. See Section 7.3.2.

Slug flow

See 

Slug flow alarms in Section 22.7.3.

Plugged flow tube

Check drive gain and tube frequency. 
Purge the flow tubes or replace the 
sensor.

Moisture in sensor junction box

Open junction box and allow it to dry. 
Do not use contact cleaner. When 
closing, ensure integrity of gaskets and 
O-rings, and grease all O-rings.

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.

Incorrect sensor orientation

Sensor orientation must be appropriate 
to process fluid. See the installation 
manual for your sensor.

Erratic non-zero flow rate when flow 
is steady

Output wiring problem

Verify wiring between Series 3000 
device and receiving device. See the 
transmitter installation instructions.

Problem with receiving device

Test with another receiving device.

Inappropriate measurement unit

Check configuration. See 
Section 22.13.

Inappropriate damping value

Check configuration. See Section 7.3.2.

Excessive or erratic drive gain

See Section 22.18.3

and

 

.

Slug flow

See 

Slug flow alarms in Section 22.7.3.

Plugged flow tube

Check drive gain and tube frequency. 
Purge the flow tubes or replace the 
sensor.

Wiring problem

Verify all sensor-to-transmitter wiring 
and ensure the wires are making good 
contact.

Process variables problems and possible remedies continued