How to choose electromagnetic flowmeter and ultrasonic flowmeter

　　The first to figure out what is electromagnetic flowmeter and ultrasonic flowmeter. The so-called electromagnetic flowmeter is the use of Ferrari magnetic induction principle of planning the flowmeter. The main structure of the electromagnetic flowmeter has a magnetic circuit system, measuring conduit, electrode, shell, lining and converter and other parts of the composition, from the physical properties, it has a strong anti-interference ability, not subject to the viscosity of the object, density, pressure. This kind of flow device is more common, production and repair skills are relatively sophisticated. Its strengths it has corrosion resistance, and abrasion resistance, long service life, followed by two-way measurement, convenient operation.

　　Electromagnetic flow meters are now used in metallurgy, industry, chemical industry, agricultural irrigation, environmental protection, medicine and other fields. Typically, it is used to measure the volume flow of conductive liquids in the closed conduit. But the electromagnetic flow meter can not measure the vapor, gas, etc., so the limitations are very large, in the conductivity is very low in the liquid, electromagnetic flow measurement effect is not good. Ultrasonic flow meter is through ultrasonic waves to measure the liquid flow in the pipeline medium, as early as the 1970s ultrasonic flow meter has now been widely used, and now it is more sophisticated skills, the scope of application is broader.

　　Ultrasonic flow meter is a great advantage is that he can not have to touch the measured object to check the fluid flow medium, the advantage is that no matter what medium or caliber of pipeline, will not affect the efficiency of ultrasonic flow meter, and at the same time, like electromagnetic flowmeter can not detect the gas and steam, ultrasonic flowmeter can be detected.