NF X10-122-1*NF ISO 17089-1:2020 Measurement of fluid flow in closed conduits - Ultrasonic meters for gas - Part 1 : meters for custody transfer and allocation measurement
2020NF X10-122-1*NF ISO 17089-1:2020 Measurement of fluid flow in closed conduits - Ultrasonic meters for gas - Part 1 : meters for custody transfer and allocation measurement