Emerson 00809-0100-4514, 1154 manual Process Flange Reassembly, Rosemount, Reference Manual

Rosemount 1154

Reference Manual

00809-0100-4514, Rev BA January 2008

Process Flange Reassembly

1.Replace the metal O-rings (11) with new O-rings if the flanges were removed.

2.Carefully place an O-ring (11) in the isolator well of the high side (“H”) of the sensing module. Place the O-ring so the edge of the rolled ring faces the module (see Detail A of Figure 5-2 on page 5-5).

3.Carefully place the flange (13 or 15) as shown in Figure 5-2 on page 5-5.Take care not to disturb the O-rings or damage the diaphragms.

4.On differential units, repeat steps 2 and 3 for the low side (“L”) of the module. If a gage unit has two O-rings (one on each side), repeat steps 2 and 3 for the low side. If the gage unit has only one O-ring, reassemble with one O-ring on the high side.

5.Keeping the flanges parallel to each other and to the module faces, insert the four bolts (14) (and four washers on Range Code 9) and finger-tighten the nuts (8).

Each spare parts kit contains the correct number of nuts, bolts, and washers for the specific transmitter range code it is designated for. Due to consolidation of parts kits, the bolt length and quantity of washers required may differ from existing transmitter assemblies and/or parts kits. Verify by part number that the appropriate spare parts kit is used for the transmitter range code being re-assembled. Contact Rosemount Nuclear Instruments, Inc. if there are questions.

6.Evenly seat the flanges on the sensor module housing, using a hand torque wrench as specified in steps 7 through 11. See Figure 5-2 on page 5-5to identify the bolts.

7.Alternately tighten bolts A and B to 10 ft-lb (13.6 N-m) torque.

8.Alternately tighten bolts C and D to 10 ft-lb (13.6 N-m) torque.

9.Check the torque on bolts A and B.

10.Check the torque on bolts C and D.

11.Repeat steps (7)-(10) at 15 ft-lb (20 N-m) torque, at 20 ft-lb (27 N-m) torque, at 25 ft-lb (34 N-m) torque, at

30 ft-lb (41 N-m) torque, and at 35 ft-lb (48 N-m) torque until all bolts are torqued to 35 ±1 ft-lb (48 ±1 N-m).

12.Expose all ranges of gage transmitters to two temperature cycles over the expected temperature operating range before calibrating. Expose differential and high-line differential Range Code 4’s to two temperature cycles over the expected temperature operating range before calibrating.

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