ITT Controls Barton Nuclear 227A User Manual

BARTON
®
NUCLEAR MODEL 227A/227AS
DIFFERENTIAL PRESSURE INDICATOR
User Manual
Part No. 9A-C10122, Rev. 02
April 2011
Contents
Safety ............................................................................................................ 2
Section 1—Introduction ................................................................................. 3
General ......................................................................................................... 3
Product Description....................................................................................... 3
................................................................................................ 5
Section 2—Installation ................................................................................... 7
General ......................................................................................................... 7
Mounting/Piping/DPU Installation ................................................................. 7
Zero Check/Adjustment ................................................................................ 7
Startup .......................................................................................................... 8
Section 3—Maintenance and Calibration ..................................................... 9
Tools.............................................................................................................. 9
Bezel/Lens (or Cover) Installation and Removal .......................................... 9
Calibration Check........................................................................................ 10
Pointer Installation and Removal ................................................................ 10
Pointer Installation .................................................................................. 10
Pointer Removal ...................................................................................... 10
Indicator Calibration .....................................................................................11
Drive Arm Tightness Test ......................................................................... 14
Drive Arm Stop Adjustment .................................................................... 14
Troubleshooting ......................................................................................... 14
Linkage .................................................................................................... 14
Pointer ..................................................................................................... 14
DPU ......................................................................................................... 14
Section 4—Assembly Drawings and Parts Lists ....................................... 15
Section 5—Dimensional Drawings ............................................................. 23
Appendix A—Model 224 DPU ....................................................................A-1
DPU Description ........................................................................................A-1
.........................................................................................A-1
Theory of Operation ...............................................................................A-3
DPU Installation .........................................................................................A-4
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ITT Controls Barton Nuclear 227A Specifications

General

Brand	ITT Controls
Model	Barton Nuclear 227A
Category	Measuring Instruments
Language	English

Summary

Section 1: Introduction

General Information

Basic overview of the indicator's purpose and operation.

Product and DPU Description

Details on the indicator's dial, actuation, and reference to the Model 224 DPU.

Technical Specifications

Accuracy, dial size, temperature limits, materials, and case variations.

Physical Characteristics

Overall dimensions, weight, and DPU unit reference.

Section 2: Installation

Installation Precautions

Steps for inspecting and preparing the instrument for installation.

Mounting and Piping

Guidance on physical mounting and connecting the DPU.

Zero Check and Adjustment

Procedure for verifying and setting the zero point of the indicator.

Section 3: Maintenance and Calibration

Recommended Tools

List of tools required for maintenance and calibration tasks.

Bezel and Lens Service

Steps for removing and reinstalling the front bezel and lens cover.

Calibration Verification

Steps to verify the instrument's calibration against factory tolerances.

Pointer Servicing

Instructions for safely removing and reinstalling the indicator pointer.

Full Indicator Calibration

Detailed procedure for calibrating the indicator when the DPU is replaced.

Drive Arm and Stop Adjustments

Procedures for testing drive arm connection and setting pointer stop limits.

Troubleshooting Guide

Guidance for resolving issues related to linkage, pointer, or DPU.

Section 4: Assembly and Parts

Universal Design Assembly

Exploded view and part identification for the universal indicator design.

Inverted Design Assembly

Exploded view and part identification for the inverted indicator design.

Detailed Parts List

Comprehensive list of components, part numbers, and quantities for the indicator.

SST Case Assembly

Exploded view and part identification for the stainless steel case indicator.