The advantages and disadvantages of ultrasonic flow sensor development
Ultrasonic flow sensor is widely used in measuring the liquid flow, ultrasonic flow sensor can adapt to a variety of pipe diameter and flow range measurement, measuring diameter of 8 mm, biggest can reach 3000 mm. Pipe, also can adapt to a variety of material such as carbon steel pipe, PVC pipe, etc.
Ultrasonic flow sensor accuracy is almost not affected by measurement of body temperature, the effects of parameters such as pressure, viscosity, density, and the sensor can be made into non-contact external clip-on and portable measuring instrument, solved the other type is difficult to measure by instrument of strong corrosion resistance, electrical conductivity, radioactive and flammable and explosive medium flow measurement problem. And, based on the characteristics of non-contact measurement, combined with reasonable electronic circuit, a result that ultrasonic flow sensor ability to adapt the other type of measuring instrument incomparable, it is more and more attention to the product seriation, generalization and development, has now made from different channels of standard type, high temperature, explosion-proof, wet type instrument so as to adapt to different medium, different occasions and different pipe flow measurement.
Ultrasonic flow sensor has its limits. At present domestic ultrasonic flow sensor is mainly limited transducer and coupling agent, ultrasonic can in aluminium and transducer joint of pipe wall to support the use of coupling agent and measurement of body temperature range is limited to the transducer and the coupling degree of material heat resistance. Secondly, high temperature by measurement of body sound transmission speed of the original data is not all. At present our country independent production of ultrasonic flow sensor can only be used to measure the fluid under 200 ℃. In addition, ultrasonic flow sensor development influenced by integrated circuit technology, ultrasonic flow sensor measuring line is more complicated than the general flow sensor.
We want to ultrasonic flow sensor is widely used will need to retain its advantage, improve its shortcomings, such as perfect measuring circuit, etc.