Gas Measurement Equipment Approved for Billing Purposes

The following is a list of gas measurement equipment approved for billing purposes, in accordance with COMAR 20.55.05.02 and COMAR 20.25.01.04-1A(2). This includes: diaphragm meters; rotary meters; turbine meters; ultrasonic gas meters; fluid oscillation meters; orifice metering systems; pressure and/or temperature correcting devices; recording gauges for pressure and volume; recording gauges for pressure, volume, and temperature; and meter provers.

Gas Measurement Equipment Approved for Billing Purposes (PDF)