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Electromagnetic flowmeters are described by classification

General purpose General electromagnetic flowmeters used in metallurgy, petrochemical, paper, textile, water supply and drainage, sewage treatment, and pharmaceutical, food, biological and fine chemical industries are the main types of electromagnetic flowmeters. There is a range requirement for the conductivity of the measured medium, and generally it cannot exceed the upper and lower limits. Explosion-proof type For use in places with an explosive atmosphere. Due to the large excitation current energy, it is still mainly based on explosion-proof type. In recent years, intrinsic safety has emerged in foreign countries, that is, safety spark-type electromagnetic flowmeters, the excitation power is greatly reduced, and it can be made into an integrated type, all of which are installed in dangerous areas. Hygienic type Electromagnetic flowmeters used in medicine, food and biochemical industries must comply with relevant hygiene requirements in terms of timing, easy disassembly and cleaning. Waterproof type For sensors installed under the ground, it can withstand short periods of water immersion. Submersible Type Used to measure the flow of free-flow free flow in open channels or non-full culverts. The sensor is in the lower part of the open channel intercepting baffle and is immersed in water for a long time. The structure and use are different from the general electromagnetic flowmeter. Plug-in type Electromagnetic flow sensor for large diameters. The sensor is inserted radially from the pipe opening to measure the local flow rate to estimate the flow rate with low accuracy but at a low price for the control system.

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