National standard for electromagnetic flowmeter

National standard of electromagnetic flowmeter, according to national industry standard gb4208-76 and international electrotechnical commission specification iec529-76, there are the following categories of standards:

I. IP65: it is water-proof type. The sensor housing of electromagnetic flowmeter allows water tap to spray water on the sensor from all directions of the sensor of electromagnetic flowmeter. The working pressure of water spraying is 30Kpa, water flow is 12.5l /S, and the spacing is 3m.

Ii. IP67: electromagnetic flowmeter sensor can be used for short-term immersion in water.

Iii. IP68: for deep submersible type -- suitable for long-term work in water or underground under a certain working pressure. At this time, the sensor and display information of the electromagnetic flowmeter are separated.

National standard for electromagnetic flowmeter

The protection level shall be selected according to the specific situation. The electromagnetic flowmeter sensor shall be selected IP68 when installed under the road surface and often subject to water flooding, and IP65 and IP67 when installed on the right or left side of the road surface.

Well the general situations of electromagnetic flowmeter protection grade reaches IP65, this level of security appropriate to the natural environment, the vast majority of the load for score electromagnetic flow sensor and signal processor part two, thus, the sensor in the steam flowmeter is quite big influence, if the electromagnetic flowmeter sensor protection grade reaches IP65, then its installation site is important to consider the following provisions:

1. Avoid corrosive vapors with high concentration in the surrounding environment as far as possible;

2. The operating temperature is within the range of -25/-10 ~ 50/60℃, and the structure temperature of a figure also depends on the electronic components, so the scope should be narrower;

3. The air humidity in the natural environment is within the range of 10% ~ 90%;

4. Try to avoid direct sunlight;

5. Prevent precipitation immersion, not easily submerged;

6. When measuring mixed phase fluid mechanics with electromagnetic flowmeter, choose the site which is not easy to cause phase separation;When measuring the component liquid, it is prevented to be installed in the middle and lower reaches of the mixture without symmetry.When measuring the exothermic reaction pipeline, it shall be installed in the middle and lower reaches of the sufficient reaction section.

7. Try to prevent air pressure from changing in the measuring tube;

8. Choose a site with little vibration, and it is very suitable for the all-in-one dashboard;

9. To prevent the influence of magnetic field caused by large motor and large transformer, etc.;

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