BS ISO 17089-1:2019 Measurement of fluid flow in closed conduits. Ultrasonic meters for gas Meters for custody transfer and allocation measurement

Volume flowmeters
Gas-supply meters
Conduits (hydraulic)
Measurement characteristics
Flow measurement
Errors
Ultrasonic devices
Ultrasonics
Pipes
Flow
Gases
Air
Flowmeters
Natural gas
Gas flow

Link: BS ISO 17089-1:2019 Measurement of fluid flow in closed conduits. Ultrasonic meters for gas Meters for custody transfer and allocation measurement
Source: BSI Standards