ANSI B109.1 January 1, 2000
Diaphragm Type Gas Displacement Meters (under 500 Cubic Feet Per Hour Capacity)
Includes all amendments and changes through Reaffirmation Notice , 2008
Additional Comments: XQ0008
Published By:American Gas Association (AGA)
This standard applies to diaphragm-type gas displacement meters, designed for revenue measurement of fuel gas, having a flow rating of less than 500 cubic feet per hour (14.16m³/h) capacity at 0.5 inch water column (125 Pa) differential pressure at standard conditions.
Part I comprises a list of definitions and terms used throughout the standard.
Part II covers the construction requirements for qualifying new-type meters in the designated flow-rate ranges.
Part III covers the performance requirements for qualifying new-type meters in the designated flow-rate ranges.
Part IV covers the "in-service" performance requirements for diaphragm-type meters in the designated flow-rate ranges.
Part V addresses installation requirements for these meters.
Part VI pertains to auxiliary devices used with gas meters covered by this standard.
Part VII covers test methods and equipment.