Emerson 3051S Specifikace stáhnout pdf (Strana 97)

Reference Manual

00809-0100-4801, Rev FA

October 2010

5-7

Rosemount 3051S Series

Table 5-2. Bolt Installation

Torque Values

4. If you replaced the PTFE SuperModule O-rings, re-torque the flange

bolts after installation to compensate for cold flow.

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).

NOTE

After replacing O-rings on Range 1 transmitters and re-installing the process

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

hours. Then re-tighten the flange bolts in a cross pattern, and again expose

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

calibration.

Bolt Material Initial Torque Value Final Torque Value

CS-ASTM-A445 Standard 300 in-lb. (34 N-m) 650 in-lb. (73 N-m)

316 SST—Option L4 150 in-lb. (17 N-m) 300 in-lb. (34 N-m)

ASTM-A-193-B7M—Option L5 300 in-lb. (34 N-m) 650 in-lb. (73 N-m)

Alloy K-500 —Option L6 300 in-lb. (34 N-m) 650 in-lb. (73 N-m)

ASTM-A-453-660—Option L7 150 in-lb. (17 N-m) 300 in-lb. (34 N-m)

ASTM-A-193-B8M—Option L8 150 in-lb. (17 N-m) 300 in-lb. (34 N-m)

1 2 ... 92 93 94 95 96 97 98 99 100 101 102 ... 239 240

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Emerson 3051S Specifikace Strana 97