1 Product Overview

Dear user, thank you for using our company's ultrasonic micro gas meter. Please read this instruction manual carefully before use so that you can use our company's products easily.

The smart ultrasonic gas meter is mainly composed of a transducer and a converter. It is a flow meter developed based on the principle that the propagation speed of ultrasonic waves in flowing media is equal to the vector sum of the average flow speed of the measured medium and the speed of sound waves in stationary media. There are different types such as Doppler method, beam shift method, velocity difference method, noise method and correlation method.

State-of-the-art signal digital processing technology makes the instrument measurement signal more stable, resistant to damage, and more accurate in measurement. There are no mechanical transmission parts, which are not easily damaged, maintenance-free and have a long life. The circuit is more optimized and highly integrated; it has low power consumption and high reliability. Intelligent standard signal output, friendly human-machine interface, and a variety of secondary signal outputs for you to choose. Pipe segment type small pipe diameter measurement is economical, convenient and has high measurement accuracy.

Intelligent ultrasonic gas meters commonly use piezoelectric transducers. It utilizes the piezoelectric effect of piezoelectric materials and uses an appropriate transmitting circuit to add electrical energy to the piezoelectric element of the transmitting transducer, causing it to generate ultrasonic vibrations. Ultrasonic waves are injected into the fluid at a certain angle and propagated, and are then received by the receiving transducer and converted into electrical energy through the piezoelectric element for detection. Transmitting transducers utilize the inverse piezoelectric effect of piezoelectric elements, while receiving transducers utilize the piezoelectric effect.

Intelligent ultrasonic gas meters are accurate, stable, and easy to operate and are unique in the market. The product is a widely used, universal and economical, clamp-on, time-difference intelligent ultrasonic gas meter. It has a very simple installation method, no need to break the pipe or stop the water. It is mostly used for measuring the flow of large pipelines. It is easy to use and allows customers to easily implement it. Flexible pipe flow measurement.

2 Working principle

According to the principle of signal detection, ultrasonic flowmeters can be divided into propagation velocity difference methods (direct time difference method, time difference method, phase difference method and frequency difference method), beam offset method, Doppler method, cross-correlation method, spatial filtering method method and noise method, etc. Our time-difference smart ultrasonic gas meter: measures the time difference caused by different propagation speeds during forward and reverse propagation to calculate the measured fluid speed. It uses two acoustic transmitters (SA and SB) and two acoustic receivers

3 function list

4 technical parameter