Emerson manual Returning Rosemount Products and Materials, Rosemount 3051N, Reference Manual

Rosemount 3051N

Reference Manual

00809-0100-4808, Rev CA June 2008

Table 4-1. Rosemount 3051N Troubleshooting Chart.

Symptom Corrective Actions

Milliamp Reading Is Zero	•	Check if power polarity is reversed.
	• Verify voltage across terminals (should be 10 to 55 V dc).
	• Check for bad diode in terminal block.
Transmitter Not Communicating with	•	Check power supply voltage at transmitter (minimum 10.5 V).
HART Communicator	• Verify calibration settings (4 and 20 mA points)
	• Check load resistance (250 Ω minimum).
	• Check if unit is addressed properly.
Milliamp Reading Is Low or High	•	Check pressure variable reading for saturation.
	• Check if output in alarm condition.
	• Verify 4 and 20 mA range points.
	• Perform 4–20 mA output trim.
No Response to Changes in	•	Check test equipment.
Applied Pressure	• Check impulse piping for blockage.
	• Check disabled span adjustment.
	• Check if output in alarm condition.
Pressure Variable Reading Is	•	Check impulse piping for blockage.
Low or High	•	Check test equipment.
	• Perform full sensor trim.
Pressure Variable Reading Is Erratic	•	Check impulse piping for blockage.
	•	Check damping.
	• Check for EMF interference.

The Rosemount 3051N is supplied by Rosemount Nuclear Instruments, Inc. as a non-field repairable device to ensure its qualification status is maintained. The Rosemount 3051N must be returned to Rosemount Nuclear Instruments, Inc. (RNII) for repairs and/or failure analysis. Instructions for returning product follow. Any piece parts, if available, must be supplied by RNII to maintain the Rosemount 3051N qualification status.

Returning Rosemount Products and Materials

Authorization for return is required from Rosemount Nuclear Instruments Inc. prior to shipment. Contact Rosemount Nuclear Instruments, Inc. at (952)

949-5210 for details on obtaining Returned Material Authorization (RMA). Rosemount Nuclear Instruments will not accept any returned material without Returned Material Authorization. Materials returned without authorization are subject to be returned to the customer.

Materials returned for repair should be shipped (prepaid) to:

Rosemount Nuclear Instruments, Inc.

8200 Market Blvd

Chanhassen, MN 55317

USA

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