Applies to diaphragm type gas meters, designed for revenue measurement of fuel gas, having a flow rating of 500 cubic feet per hour (14.1 m3/h) capacity and over at 0.5 inch water column (125 Pa) differential pressure at standard conditions. To obtain an
ANSI B109.2-2000 history
2000ANSI B109.2-2000 Diaphragm-Type Gas Displacement Meters (500 Cubic Feet Per Hour Capacity and Over)