BS ISO 22734. Hydrogen generators using water electrolysis process. Industrial, commercial, and residential applications. Part : Residential applications— 56 стр.
BS ISO 17089-1. Measurement of fluid flow in closed conduits. Ultrasonic meters for gas. Part 1. Meters for custody transfer and allocation measurement— 137 стр.
BS EN IEC 62828-5. Reference conditions and procedures for testing Industrial and process measurement transmitters. Part 5. Specific procedures for flow transmitters— 36 стр.