To accurately detect traffic depends on effective testing tools---Flow meters and ultrasonic flow meters have been widely used due to their unique advantages such as simple structure, low pressure loss, and convenient use.

Flow rate is a very important parameter in the detection and control of industrial production process. In the petroleum, chemical, hydropower and other sectors, the detection of liquid fluid flow has become an indispensable part of production. To accurately detect flow, it depends on effective Test tool---Flow meters and ultrasonic flow meters have been widely used due to their unique advantages such as simple structure, low pressure loss, and convenient use.

Compared with other types of flow meters, such as electromagnetic flow meters, vortex flow meters, differential pressure flow meters, mass flow meters, etc., ultrasonic flow meters have the following advantages:

First of all, it adopts non-contact measurement. The transducer is installed on the outer wall of the pipeline. It basically does not interfere with the flow field and has no pressure loss. It is an ideal energy-saving instrument, especially when measuring large flow rates, the energy-saving effect is more significant.

Secondly, the measuring diameter range is large, generally 05~5m, and some up to 10m, and the cost is basically independent of the size of the diameter; the transducer has various types, which can be adapted to the needs of different occasions, except for measuring water, oil and other general guides. In addition to acoustic fluids, it can also measure high temperature, high pressure, strong corrosion, non-conductive, explosive, and radioactive fluids.

Finally, it has good versatility. Within the range of measurable diameters, the same flow meter can measure any pipes of different diameters; no moving parts, no wear, long service life, light weight; high sensitivity, can detect small changes in flow rate, The output characteristic has a wide linear range.

It is easy to see that the ultrasonic flowmeter has the advantages of small size, large measuring range, easy installation, maintenance-free, zero pressure loss and low starting flow rate. It is an ideal flow juice.It can accurately measure the broadband of liquid petroleum gas products without the need for verification like mechanical technology.High sensitivity makes it possible to detect any leaks in the pipeline, and can measure and supplement various variables that will affect the measurement accuracy in the field of monitoring transportation.

Ultrasonic flow meter is a kind of equipment used in volume flow testing. It is a new technology that has developed rapidly in recent years. It uses the fluid velocity information carried by the ultrasonic wave in the fluid to measure the fluid flow.

Has been widely used in industrial production, commercial measurement and water conservancy testing, etc.

In recent years, the development speed of ultrasonic flowmeter is very fast, and it has been on par with mass flowmeter and electromagnetic flowmeter in the field of flow monitoring.Ultrasonic flowmeters were used in the process control of water supply and drainage and petrochemical industries in the early days. In recent years, ultrasonic flowmeters have penetrated into all aspects of industrial production, and their applications will become more and more extensive, driving the rapid development of the industry.