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Description of the applicable scope of open-flow electromagnetic flowmeter and orifice flowmeter

Electromagnetic flowmeters have many requirements in installation, in which strong interference sources are avoided, the length of straight pipe sections, liquid conductivity must be uniform and stable, and the connection of electromagnetic flowmeter should be consistent with the installation guide. No air bubbles are generated, the flowmeter can be installed vertically or tilted vertically, but it must be ensured that liquid must be filled in the measuring tube. The design of the piping must ensure that there are no air bubbles in the pipe section.

Electromagnetic flowmeters are often used more in industrial production. Compared with other flowmeters, electromagnetic flowmeters can better handle corrosive and dirty logistics.

Of course, for electromagnetic flowmeters, he has certain advantages and disadvantages. First of all, it is an advantage. The measurement channel of the electromagnetic flowmeter is very smooth, and there is basically no problem of blockage, so it is more suitable for the measurement of sewage and mud.

And the construction of the electromagnetic flowmeter sensor can be said to be very simple, he is not affected by the density, temperature, and even viscosity of some fluids, and his caliber has a variety of options, from a few millimeters to a few meters You can choose by needing to. The flow range is highly controlled.

The corrosion resistance of the electromagnetic flowmeter determines that he can decide what it can do without other products, such as measuring beverages, sewage, mud, and measuring acid-base solid particles.

Of course, the electromagnetic flowmeter also has his shortcomings. His scope of use has certain limitations, and he can only measure conductive substances. Of course, he can already use it in more occasions.

The lining material of the electromagnetic flowmeter is not easy to measure for high temperature and low temperature. If it can develop high temperature and low temperature materials in the future, it will be a major breakthrough for the electromagnetic flowmeter.

The electromagnetic flowmeter measures the volumetric flow of the medium. If the density of the fluid is not taken into account, the accuracy of the measurement result will be affected. Compared with other gauges, the electromagnetic flowmeter will be more strict and anti-locking for the overall installation and debugging. Must have specific instructions for use.

If an electromagnetic flowmeter is used to measure a dirt-laden liquid, the non-shopping of the inner wall of the tube may cause a certain error in the measurement result. Even when the dirt reaches a certain level, it will be impossible to measure, and if electromagnetic interference occurs outside, it will affect the accuracy of the measurement.

At the same time, the demand for orifice flowmeters is relatively large, mainly for the device of flow pressure difference, which can measure the flow of liquid, gas, steam, etc. His application market appears in chemical, metallurgical and petroleum. , electricity and other departments.

The overall structure of the orifice flowmeter is very simple, and the quality is also relatively strong, the price is low, and the service life is long. It is the best choice for some companies. The range of the orifice flowmeter is very high, no matter Both single-flow and mixed-phase flow can be applied, and the installation is very simple. The only drawback is that his measurement accuracy needs to be improved, and it is easy to be affected by many factors, and the pressure loss will become relatively large. There are also certain requirements in the length of the pipe section.

In the corrosive pollution performance, a forced removal is required every year for inspection, and the workload is very large.

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