Emerson 00809-0100-4514, 1154 manual Process Flange Reassembly

Page 42

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.

5-8

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Contents Rosemount Reference ManualImportant Notice -- Errata Rosemount 1154 Alphaline Nuclear Pressure Transmitter Return of Material Revision Status Changes From June 1999 to JanuaryNew Old Changes Rosemount Table of Contents Maintenance Troubleshooting Specifications Reference DataSection TOC-3 TOC-4 Section Introduction Overview About the TransmitterRosemount Section Installation Overview General ConsiderationsMechanical Considerations Process ConnectionsRosemount Conduit Electrical ConsiderationsTransmitter Wiring Connections Installation ProceduresMechanical Pressure Dimension Range CodeLiquid Service ElectricalTransmitter Terminal Block Rosemount Span Adjustment Zero Adjustment Section CalibrationOverview Calibration Calibration Procedures Zero and Span AdjustmentZero and Span Adjustment Screws Linearity Adjustment Damping Adjustment Linearity and Damping AdjustmentRosemount Calculate zero adjustment correction in terms of pressure Rosemount Section Operation Overview Transmitter OperationΔ-Cell Linearity Adjustment DemodulatorFV Iref Maintenance Troubleshooting OverviewSafety Messages Test Terminals Board CheckoutSensing Module Checkout Disassembly Procedure Process Flange RemovalRosemount 1154 Parts List Part DescriptionReassembly Procedure Rosemount Process Flange Reassembly Post Assembly Tests Symptom Potential Source Corrective ActionOn Next Check for adequate voltage to the transmitter Specifications and Reference Data Nuclear SpecificationsPerformance Specifications Range Code Overpressure Effect Functional Specifications Range Code Static Pressure Zero EffectRange Code Response Time Range Code Pressure Ranges 25 to 0-150 inH2O 0-6.22 to 0-37.3 kPaPhysical Specifications Range Code Overpressure LimitRosemount Ordering Information Rosemount 1154DP, 1154HP, and 1154GP Spare Parts Rosemount 1154DP 1154HP 1154GP Part Description Order NoFor use with existing N0026 transmitter only Spare Parts Shelf Life Important Notice Rosemount Current Control Current Limit Index-2 Page ¢00809-XXXX-XXXX ¤
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