Emerson 3051S Specifikace stáhnout pdf (Strana 143)

Reference Manual

00809-0100-4801, Rev FA

October 2010

7-39

Rosemount 3051S Series

Comprehensive Proof Test

The comprehensive proof test consists of performing the same steps as the

simple suggested proof test but with a two point calibration of the pressure

sensor in place of the reasonability check. This test will detect ~ 87% of

possible DU failures in the device.

Required tools: Field Communicator and pressure calibration equipment.

1. Bypass the safety function and take appropriate action to avoid a false

trip.

2. Perform Proof Test 1.

3. Perform a minimum two point sensor calibration check using the 4-20

mA range points as the calibration points.

4. Check the reference mA meter to verify the mA output corresponds to

the pressure input value.

5. If necessary, use “Choosing a Trim Procedure” on page 4-5 of the 3051S

Reference Manual.

6. Document the test results per your requirements.

7. Remove the bypass and otherwise restore normal operation.

8. Place the Security switch in the “ON” position.

NOTE

The user determines the proof test requirements for impulse piping.

Inspection Visual Inspection

Not required

Special Tools

Not required

Product Repair

The 3051S is repairable by major component replacement.

All failures detected by the transmitter diagnostics or by the proof-test must be

reported. Feedback can be submitted electronically at

http://rosemount.d1asia.ph/rosemount/safety/ReportAFailure_newweb.asp

All product repair and part replacement should be performed by qualified

personnel.

3051S SIS Specifications The 3051S must be operated in accordance to the functional and

performance specifications provided in the 3051S Product Data Sheet

(document number 00813-0100-4801).

Failure Rate Data

The FMEDA report includes failure rates and common cause Beta factor

estimates.

The report is available at

http://www2.emersonprocess.com/en-US/brands/rosemount/Safety-Products/Pages/index.aspx.

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