Emerson 00809-0100-4514, 1154 manual Disassembly Procedure, Process Flange Removal

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Rosemount 1154

Reference Manual

00809-0100-4514, Rev BA January 2008

DISASSEMBLY

PROCEDURE

Process Flange Removal

NOTE

Numbers in parentheses refer to item numbers in Figure 5-2 on page 5-5.

NOTE

The Rosemount 1154 Pressure Transmitter contains electronic circuit boards which may be static sensitive.

Process O-rings may retain some process fluid after disassembly of process flanges. If this fluid is determined to be contaminated, take appropriate safety measures.

NOTE

Read the Process Flange Reassembly Procedure on page 5-8before attempting disassembly. Special testing and traceability are required.

1.Remove the transmitter from service before disassembling flanges.

2.Detach process flanges (13, 15) by removing the four large bolts (14). Take care not to scratch or puncture the isolating diaphragms. Identify high and low (“H” and “L”) flanges for reassembly.

NOTE

Carefully remove the O-rings (11) from the cell if they do not come off when the flange is removed. Do not pry the O-ring from its seat, as you may damage the isolating diaphragm.

3.Clean isolating diaphragms with a soft rag and a mild cleaning solution. Do not use any chlorine or acid solutions to clean the diaphragms. Rinse diaphragms with distilled water.

5-4

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Contents Rosemount Reference ManualImportant Notice -- Errata Rosemount 1154 Alphaline Nuclear Pressure Transmitter Return of Material New Old Changes Revision StatusChanges From June 1999 to January Rosemount Table of Contents Section Maintenance TroubleshootingSpecifications Reference Data TOC-3 TOC-4 Section Introduction Overview About the TransmitterRosemount Section Installation Overview General ConsiderationsMechanical Considerations Process ConnectionsRosemount Conduit Electrical ConsiderationsTransmitter Wiring Connections Mechanical InstallationProcedures Pressure Dimension Range CodeLiquid Service ElectricalTransmitter Terminal Block Rosemount Overview Calibration Span Adjustment Zero AdjustmentSection 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 On Next Post Assembly TestsSymptom Potential Source Corrective Action Check for adequate voltage to the transmitter Specifications and Reference Data Nuclear SpecificationsPerformance Specifications Range Code Overpressure Effect Range Code Response Time Functional SpecificationsRange Code Static Pressure Zero Effect 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 ¤