Table of Contents
Contents
Disclaimerandcopyright
Preface
Historyofthedevelopmentofstandardsfor
diaphragm-typegasdisplacementmeters
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
externalpartsofgasmeters
2.10Meterindexwindowimpacttest
2.11Meterindexwindowclearnesstest
2.12Temperatureandthermalshockresistance
2.13Strengthofmeterconnections
PartIII
Performancerequirementsforqualifyingnewtype
meters
3.1Scope
3.2Meterclasses
3.3Accuracyofmeters
3.4Pressureandleaktests
3.5Noiseandvibration
PartIV
In-serviceperformance
4.1Scope
4.2Testrequirements
4.3In-serviceperformanceprograms
4.4Records
PartV
Meterinstallationrequirements
5.1Scope
5.2Generalrequirements
5.3Location
5.4Installation
5.5Metershutoff
5.6Metersupport
5.7Metersizing
5.8Spacingofmeters
5.9Identification
5.10On-siteinspection
5.11Specialservicerequirements
PartVI
Auxiliarydevicesforgasmeters
6.1Scope
6.2Constant-pressure-compensatingindex
6.3Remotemeterreadingdevices
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 under 500 cubic feet per hour (14.2m3/h) at 0.5 inch water column (125 Pa) differential pressure at standard conditions.
