Its working principle is that when the two pressures of the measured medium pass into the high and low pressure chambers, they act on the isolation diaphragms on both sides of the delta element (ie the sensitive element), and are transmitted to the measuring membrane through the isolation diaphragm and the filling liquid in the element. slice on both sides.
The (floating ball) liquid level transmitter is composed of a measuring diaphragm and electrodes on both sides of the insulating sheet to form a capacitor. When the pressure on both sides is inconsistent, the displacement of the measuring diaphragm is caused, and the displacement is proportional to the pressure difference, so the capacitance on both sides is not equal, and through the oscillation and demodulation links, it is converted into a signal proportional to the pressure. The working principle of the pressure transmitter and the absolute pressure transmitter is the same as that of the differential pressure transmitter, but the different low pressure chamber pressure is atmospheric pressure or vacuum.
Second, the application of level transmitter
Liquid level transmitters can be used in industrial field liquid level measurement and control, rural water supply and sewage treatment, liquid level measurement and control in petroleum, chemical, power plants, hydrological monitoring, reservoirs, dams, hydropower construction and other fields. The liquid level transmitter has submerged, straight rod, flange, threaded, inductive, screw-in, and floating ball structural designs, with anti-blocking design, simple installation, convenient use and strong interchangeability , The high-quality sensor has high sensitivity and fast response speed, accurately reflects the subtle changes of flowing or static liquid level, and has high measurement accuracy.
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