T3RM product is a three-pair rotor waist wheel flowmeter developed by our company based on years of research and development experience and adopting a number of inventions and innovative technologies. It has many advantages such as high measurement accuracy, good repeatability, wide range, and small pulsation. It can be widely used in high-precision trade measurement of pure gases such as natural gas and hydrogen, and can be used as a standard table, check table or comparison table of gas flow standard devices.