A variety of factors such as noise

hardware

pipe wall roughness

flow field distribution will reduce precision of ultrasonic gas flowmeter in the actual measurement. And the use of multipath flowmeter can reduce the impact of these factors. On the basis of introducing the measurement principle and influence factors

the optimization and mathematical modeling of the installation position of the channel are studied by numerical integration method

and the weight coefficients are solved. It can improve the accuracy of measurement by calculating the average speed of the measuring surface. Under the support of the theory

the hardware system is planned and selected. Through the experimental measurements and data analysis

the measurement precision can meet the basic requirements

and it can provide some reference for the innovation of the next generation of gas ultrasonic flowmeter.