Table of Contents
Contents
Disclaimerandcopyright
Preface
Historyofthedevelopmentofthisstandard
AccreditedstandardscommitteeB109
Scope
PartI
Definitions
PartII
Constructionrequirementsforqualifyingnew-type
meters
2.1Scope
2.2Dimensions
2.3Meteridentification
2.4Diaphragmidentification
2.5Inletidentification
2.6Protectionofmeters
2.7Meterindex
2.8Corrosionandchemicalresistanceof
internalparts
2.9Corrosionandchemicalresistanceof
externalparts
2.10Meterindexwindowimpactresistance
2.11Meterindexwindowclearnesstest
2.12Temperatureandthermalshockresistance
2.13Strengthofmeterconnections
PartIII
Performancerequirementsforqualifyingnew-type
meters
3.1Scope
3.2Meterclasses
3.3Accuracyofmeters
3.4Metercasepressuretest
3.5Pressureandleaktests
3.6Noiseandvibration
PartIV
In-serviceperformance
4.1Scope
4.2Testconditions
4.3In-serviceperformanceprograms
4.4Records
PartV
Meterinstallation
5.1Scope
5.2General
5.3Location
5.4Installation
5.5On-siteinspection
5.6Specialservice
PartVI
Auxiliarydevicesforgasmeters
6.1Scope
6.2Pressuresystem
6.3TemperatureSystems
6.4Volumeindicator
6.5Instrumentchartdrives
6.6Circularcharts
6.7Recorders
6.8Automaticintegrators
6.9Constant-pressure-compensatingindex
6.10Remotemeterreadingdevices
6.11Instrumentadaptorplates
6.12Inspectionandtestingclassification
PartVII
Testmethodsandequipment
7.1Scope
7.2Measurementreferencebase
7.3Unitsofmeasure
7.4Baseconditions
7.5Metertestingsystems
7.6Calibrationofmetertestingsystems
AppendixA
Connectiondimensions,nominal
AppendixB
Threadspecifications
AppendixC
Generalservicecapacityequation
AppendixD
Meteraccuracy
AppendixE
Proverbellcalibrationbyphysicalmeasurement
AppendixF
Barcodemetersandauxiliarydevices Abstract
Provides a basic standard for safe operation, and substantial and durable construction for diaphragm-type gas displacement meters having a gas flow rating of 500 cubic feet per hour capacity (14.6 m3/h) and over at 0.5 inch water column (125 Pa) differential pressure at standard conditions.
