Intelligent magnetic current meter, intelligent, more accurate measurement

It is a flow meter made according to Faraday's law of electromagnetic induction. It is used to measure the volume flow of conductive liquid in a pipeline.

There are some factors that affect the measurement accuracy of the flow meter, listed below:

1. If the measured liquid contains metal, the electrodes of the intelligent magnetic current flowmeter are prone to short circuit. At this time, the measured value of the flowmeter is obviously smaller or tends to zero.

This phenomenon does not occur often in daily production operations. When measuring high-viscosity media, since the media is easy to adhere to and precipitate on the pipe wall, if the conductivity of the measured liquid is lower than the conductivity of the attached medium, the signal potential of the electrode will be shunted by the precipitation and cannot work normally, resulting in an electrode short circuit. If the precipitated medium is a non-conductive layer, it will cause the electrode to open circuit and the intelligent magnetic current flowmeter will not work properly. If the iron oxide rust layer adheres to the lining pipe wall, or the main component is a metal precipitate, its conductivity is greater than the liquid conductivity, and the actual flow value will be higher than the flow value measured by the flowmeter. If the precipitate is a scale layer such as calcium carbonate, the conductivity of the measured liquid is higher than the conductivity of the precipitate, and the measured flow value will be less than the actual flow.

Second, because the intelligent magnetic current flowmeter has a much greater chance of measuring suspended solids or dirty bodies than other flow meters, the probability of failure caused by the inner wall adhesion layer is relatively high.

If the conductivity of the adhesion layer is close to that of the liquid, the meter can still output signals normally, but the flow area will change, resulting in a hidden fault of measurement error; if it is a high conductivity adhesion layer, the electromotive force between the electrodes will be short-circuited; if it is an insulating adhesion layer, the electrode surface will be insulated and the measurement circuit will be disconnected. The latter two phenomena will make the meter unable to work.