As living standards continue to improve, people are becoming more and more environmentally conscious and conventional energy sources that pollute heavily are gradually being abandoned. In the 1960s and 1970s, the state also introduced gas pipeline policies and corresponding measures. With the constr

An Ultrasonic gas meter uses sound waves to determine the speed at which a fluid flows through a pipe. Under non-flowing conditions, the frequency of the ultrasonic wave transmitted into the pipe is the same as the frequency it reflects from the fluid. Under flow conditions, the frequency of the ref

As living standards continue to improve, people are becoming more and more environmentally conscious and conventional energy sources that pollute heavily are gradually being abandoned. In the 1960s and 1970s, the state also introduced gas pipeline policies and corresponding measures. With the constr

An Ultrasonic gas meter uses sound waves to determine the speed at which a fluid flows through a pipe. Under non-flowing conditions, the frequency of the ultrasonic wave transmitted into the pipe is the same as the frequency it reflects from the fluid. Under flow conditions, the frequency of the ref