Method of evaluating pneumatic valve positioners with input signal of 3 to 15 lbf/in2 (gauge)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-22-1967

Publisher

British Standards Institution

Co-operating organizations
Foreword
Method of evaluation
1 Scope
2 Terminology
3 General testing procedure
4 Static behaviour
5 Dynamic behaviour
6 Air flow
7 Other considerations
Figures
1 Dead zone, relationship of stem position to input
signal
2 Relationship between amplitude and frequency
3 Flow characteristic of a valve positioner at an
output of 9 lbf/in2

Specifies tests to determine performance of pneumatic valve positioners with 3 to 15 lbf/in² (gauge) input signal. Method of evaluation specifies use of a valve operator of a spring-opposed or double-acting diaphragm or piston type in order to allow a ready comparison to be made between different types of positioner.

This standard specifies tests designed to determine the performance of pneumatic valve positioners which accept input signals of 3 lbf/in² to 15 lbf/in².

NOTE Throughout this British Standard the term “valve operator?? is used; alternative and equally appropriate terms used within industry are “valve motor?? and “valve actuator??.

Although some valve positioners may be tested without being fitted to a valve operator, there are some positioners which form an integral part of the operator and these cannot be separately tested. The method of evaluation described in this standard therefore specifies the use of a valve operator in all cases since this allows a ready comparison to be made between different types.

The operator may be a spring-opposed or double-acting diaphragm or piston.

Committee	GEL/65/2
DevelopmentNote	Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType	Standard
Pages	14
PublisherName	British Standards Institution
Status	Current

BS 2643:1955	Glossary of terms relating to the performance of measuring instruments
BS 1523(1954) : LATEST
BS 3512(1962) : LATEST	METHOD OF EVALUATING THE PERFORMANCE OF PNEUMATIC TRANSMITTERS WITH 3 TO 15 LB/IN SQUARED (GAUGE) OUTPUT

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BS 4151:1967

Method of evaluating pneumatic valve positioners with input signal of 3 to 15 lbf/in2 (gauge)

Table of Contents

Abstract

Scope

General Product Information

Standards Referencing This Book

Category

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