The liquid measured by an electromagnetic flowmeter can be either conductive or non-conductive.
First, the working principle of electromagnetic flowmeter.
An electromagnetic flowmeter is an instrument that measures the flow rate of liquids according to Faraday's law of electromagnetic induction, using the conductivity of liquids. It is mainly composed of measuring tubes, electrodes, electromagnetic coils, signal converters and other parts. Among them, the electromagnetic coil is one of the key components. The alternating magnetic field generated by the electromagnetic coil can penetrate the measuring tube and penetrate the liquid through the electrode, which induces an electromotive force on the electrode as it flows, and the flow rate of the liquid can be determined according to Faraday's law of electromagnetic induction.
Second, the scope of application of electromagnetic flowmeter.
Due to the working principle of the electromagnetic flowmeter, the liquid measured by the electromagnetic flowmeter needs to have a certain electrical conductivity. However, not all liquids have the ability to conduct electricity, and some non-conductive liquids such as oil, natural gas, etc., are difficult to measure with electromagnetic flowmeters due to their very low conductivity. However, there are also some electromagnetic flowmeters suitable for non-conductive liquids on the market, which have improved the structure of the electromagnetic coil and electrode, improved the accuracy of the electronic signal, and made it possible to measure non-conductive liquids. Electromagnetic flowmeter
At the same time, there are also differences in the scope of application of different models of electromagnetic flowmeters. Some electromagnetic flowmeters designed to measure acidic or corrosive liquids require electrodes and measuring tubes made of corrosion-resistant materials. Other electromagnetic flowmeters suitable for high-temperature and high-pressure liquids or high-viscosity liquids require the addition of a pressure reduction device or a viscosity correction instrument. 3. SummaryThrough the above introduction, we can conclude that the liquid measured by the electromagnetic flowmeter can be a conductive liquid or a non-conductive liquid, but the conductivity of the liquid has a great impact on the measurement accuracy of the electromagnetic flowmeter. When selecting an electromagnetic flowmeter, it is necessary to select it according to the characteristics of the liquid to be measured and the requirements of the application environment.