How to select electromagnetic flowmeter?

Case introduction

　　Electromagnetic flowmeter: intelligent electromagnetic flowmeter electromagnetic flowmeter is based on Faraday's law of electromagnetic induction made of a measurement of conductive liquids. Electromagnetic flowmeter has a series of excellent characteristics, can solve other flowmeter is not easy to apply the problem, such as dirty flow, corrosion flow measurement. 70, 80's electromagnetic flowmeter has a major technological breakthrough, so that it has become a widely used class of flowmeter, in the flow meter in the use of its percentage of rising.

　　Advantages: (1) the measurement channel is a smooth straight pipe, will not be blocked, suitable for measuring solid particles containing liquid-solid two-phase fluids, such as pulp, slurry, sewage, etc.; (2) does not produce the pressure loss caused by flow detection, energy-saving effect is good; (3) measured volume flow rate is practically independent of the density of the fluid, viscosity, temperature, pressure, and electrical conductivity changes in the apparent impact; (4) the flow rate range is large, the calibre of a wide range of (5) can be applied to corrosive fluids.

　　Disadvantages: (1) can not measure the conductivity of the liquid is very low, such as petroleum products; (2) can not measure the gas, steam and contain large bubbles of liquid; (3) can not be used for higher temperatures.

　　Application Overview: electromagnetic flowmeter applications in a wide range of large-calibre instruments are more often used in water supply and drainage projects; small calibre commonly used in high requirements or difficult to measure occasions, such as iron and steel industry blast furnace airhead cooling water control, paper industry to measure the pulp liquid and black liquid, chemical industry, strong corrosive liquids, non-ferrous metallurgical industry, slurry; small calibre, small calibre is commonly used in the pharmaceutical industry, the food industry, biochemistry and other sanitation requirements. place.