Emerson 3051S Especificações descarregar pdf (Página 119)

Reference Manual

00809-0100-4803, Rev DA

Section 4: Operation and Maintenance

April 2013

Operation and Maintenance

5. Install the drain/vent valve.

a. Apply sealing tape to the threads on the seat. Starting at the base of the valve with the

threaded end pointing toward the installer, apply two clockwise turns of sealing tape.

b. Take care to place the opening on the valve so that process fluid will drain toward the

ground and away from human contact when the valve is opened.

c. Tighten the drain/vent valve to 250 in-lb. (28.25 N-m).

d. Tighten the stem to 70 in-lb. (8 N-m)

Note

Due to the sensitivity of the Range 1 DP Sensor, extra steps are required to optimize

performance. It is necessary to temperature soak the assembly using the following procedure.

1. After replacing o-rings on DP Range 1 transmitters and re-installing the process flange,

expose the transmitter to a temperature of 185 °F (85 °C) for two hours.

2. Re-tighten the flange bolts in a cross pattern.

3. Again, expose the transmitter to a temperature of 185 °F (85 °C) for two hours before

calibration.

4.6.6 SuperModule assembly

To reorder an upgrade or replacement Supermodule Assembly, use the 3051S MultiVariable

Transmitter ordering table shown in “Ordering information” on page 27 but replace the housing

option code with ‘00’.

1. Remove the Housing Assembly per “Upgrading or replacing the housing assembly

including feature board electronics” on page 24.

2. Remove currently installed SuperModule Assembly from process flange per “Flange and

drain vent” on page 27.

3. Reassemble replacement or upgraded SuperModule Assembly to process flange per

“Flange and drain vent” on page 27.

4. Reassemble the Housing assembly per “Upgrading or replacing the housing assembly

including feature board electronics” on page 24.

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Emerson 3051S Especificações Página 119