How to select the protection level of electromagnetic flowmeter-EEWORLD

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The electromagnetic flowmeter consists of two parts: the sensor and the converter. It works based on Faraday's law of electromagnetic induction and is used to measure the volume flow of conductive liquids with a conductivity greater than 5μS/cm. It is an inductive instrument for measuring the volume flow of conductive media. In addition to measuring the volume flow of general conductive liquids, it can also be used to measure the volume flow of highly corrosive liquids such as strong acids and alkalis and uniform liquid-solid two-phase suspensions such as mud, ore pulp, and paper pulp.

Electromagnetic flowmeters are widely used in flow measurement in industrial sectors such as petroleum, chemical industry, metallurgy, textile, papermaking, environmental protection, food, and municipal management, water conservancy construction, river dredging, and other fields.

Generally, the protection level of the integrated electromagnetic flowmeter is IP65. According to the national standard GB4208-84 and the International Electrotechnical Commission standard IEC529-76 on the protection level of electrical and electrical product shells, the standards are as follows:

1. IP65: It is a water-proof type. The electromagnetic flowmeter sensor shell allows the faucet to spray water from any direction of the electromagnetic flowmeter sensor. The pressure of the water spray is 30Kpa, the water output is 12.5L/S, and the distance is 3 meters.

2. IP67: The electromagnetic flowmeter sensor can be used for a short time immersed in water.

3. IP68: It is a submersible type-suitable for long-term work in water or underground under a certain pressure. At this time, the sensor of the electromagnetic flowmeter is separated from the display part and it must be made into a split electromagnetic flowmeter, but the protection level requirements of the electromagnetic flowmeter must be emphasized.

Generally, the protection level should be selected according to the actual situation. If the sensor is required to be installed below the ground and is often flooded, IP68 should be selected. If the sensor is installed above the ground, IP65 or IP67 should be selected. Under no circumstances should the display part of the electromagnetic flowmeter be exposed to water or enter water, as this will cause damage to the electromagnetic flowmeter. (end)

Reference address：How to select the protection level of electromagnetic flowmeter

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