Emerson 1154, 00809-0100-4514 manual Maintenance Troubleshooting, Overview

Page 35

Reference Manual

00809-0100-4514, Rev BA January 2008

Rosemount 1154

Section 5 Maintenance and

Troubleshooting

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2

Test Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2

Board Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-2

Sensing Module Checkout . . . . . . . . . . . . . . . . . . . . . . . . . page 5-3

Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-4

Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-6

Post Assembly Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-9

 

 

 

 

 

 

 

 

 

 

 

 

 

Use only the procedures and new parts specifically referenced in this manual to

 

ensure specification performance and certification compliance. Unauthorized

 

procedures or parts can render the instrument dangerous to life, limb, or property.

 

 

 

 

OVERVIEW

This section outlines a technique for checking out the components, a method

 

for disassembly and reassembly, and a troubleshooting guide.

 

 

 

 

 

NOTE

 

Maintenance of traceability of any replacement parts is the responsibility of

 

the user (see “Important Notice” on page 6-11and Important Notice at the

 

beginning of this manual preceding the Table of Contents).

 

 

 

 

 

The Rosemount 1154 has no moving parts and requires a minimum of

 

scheduled maintenance. Calibration procedures for range adjustment are

 

outlined in Section 3: Calibration. A calibration check should be conducted

 

after inadvertent exposure to overpressure, unless your plant considers this

 

factor separately in the plant error analysis.

 

Test terminals are available for in-process checks. For further checks, the

 

transmitter can be divided into three active physical components: the sensing

 

module, the amplifier board, and the calibration board.

 

An exploded view of the transmitter is provided in Figure 5-2 on page 5-5.In

 

the following procedures, numbers in parentheses refer to item numbers in the

 

exploded view.

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Image 35
Contents Reference Manual RosemountImportant 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 Overview About the Transmitter Section IntroductionRosemount Overview General Considerations Section InstallationProcess Connections Mechanical ConsiderationsRosemount Electrical Considerations ConduitTransmitter Wiring Connections Mechanical InstallationProcedures Range Code Pressure DimensionElectrical Liquid ServiceTransmitter Terminal Block Rosemount Overview Calibration Span Adjustment Zero AdjustmentSection Calibration Zero and Span Adjustment Calibration ProceduresZero and Span Adjustment Screws Linearity Adjustment Linearity and Damping Adjustment Damping AdjustmentRosemount Calculate zero adjustment correction in terms of pressure Rosemount Overview Transmitter Operation Section OperationΔ-Cell Demodulator Linearity AdjustmentFV Iref Overview Maintenance TroubleshootingTest Terminals Board Checkout Safety MessagesSensing Module Checkout Process Flange Removal Disassembly ProcedurePart Description Rosemount 1154 Parts ListReassembly Procedure Rosemount Process Flange Reassembly On Next Post Assembly TestsSymptom Potential Source Corrective Action Check for adequate voltage to the transmitter Nuclear Specifications Specifications and Reference DataPerformance Specifications Range Code Overpressure Effect Range Code Response Time Functional SpecificationsRange Code Static Pressure Zero Effect 25 to 0-150 inH2O 0-6.22 to 0-37.3 kPa Range Code Pressure RangesRange Code Overpressure Limit Physical SpecificationsRosemount Ordering Information Rosemount 1154DP 1154HP 1154GP Part Description Order No Rosemount 1154DP, 1154HP, and 1154GP Spare PartsFor use with existing N0026 transmitter only Spare Parts Shelf Life Important Notice Rosemount Current Control Current Limit Index-2 Page ¢00809-XXXX-XXXX ¤