What are the lining materials for electromagnetic flowmeters?

To master the electromagnetic flowmeter, you must first master its basic principles of accurate measurement. The principle of the electromagnetic flowmeter is based on the magnetic effect of the current in the flange. A pair of test electrodes is installed on the wall thickness that is perpendicular to the center line of the measuring tube and the magnetic induction line. When the conductive liquid moves along the center of the measuring tube, During linear exercise, the conductive liquid laser cuts the magnetic induction lines to cause a magnetic induction potential difference. This magnetic induction potential difference is detected by two test electrodes, and the scale size is proportional to the water flow. The controller uses the induced electromotive force as a flow signal and transmits it to the converter. After amplification, conversion filter and other signal analysis, it uses a dot matrix LCD with backlight to display instantaneous flow and accumulated flow.

From the principle of electromagnetic flowmeter, the fluid that can accurately measure the flow rate must be electrically conductive. Strictly speaking, except for high-temperature fluid flow, In addition, any fluid with a conductivity exceeding 20us/cm can use a corresponding electromagnetic flowmeter to measure the flow rate, because non-conductive gases, steam, oil, toluene and other substances cannot use electromagnetic flowmeters. to accurately measure total flow.

In the entire process of industrial production, large-diameter instrument panels are mostly used in water supply and drainage projects. Medium diameter is commonly used in heterogeneous dual-phase difficult-material fluid mechanics or high-demand sites, such as measuring pulp and black liquor in the papermaking industry, coal slurry in the non-ferrous plate metallurgical industry, coal slurry in coal washing plants, strong corrosive liquids in the chemical industry, and In the iron and steel industry, the cooling circulating water at the outlet of the ironmaking blast furnace is controlled and leaked, and the flow meter principle and control are used for hydropower transportation of coal in long-distance pipelines. Caliber and fine specifications are common in the pharmaceutical industry, food industry, biotechnology and other places with environmental hygiene regulations. Electromagnetic flowmeters can be used in various places for measurement verification.

The lining material of the electromagnetic flowmeter is mainly composed of rubber lining and PTFE lining. The rubber lining is mainly a material suitable for wear resistance. The rubber lining is mainly neoprene and polyurethane rubber. Polyurethane rubber is a material suitable for strong damage. The PTFE lining is mainly a corrosion-resistant material. The PTFE backing is mainly PTFE and PTFE. The material of PTFE-PE is suitable for strong damage. substance. Metal electrodes are mainly divided into molybdenum-containing stainless steel, duplex stainless steel B, duplex stainless steel C, titanium-tantalum, and stainless steel carbonized Wu.

If you have a certain understanding of electromagnetic flowmeters, it is logical that you can choose an electromagnetic flowmeter that suits you based on your own judgment. Select a professional electromagnetic flowmeter manufacturer based on the measured flow range, pipeline size, whether anti-corrosion coating is required, and other requirements.