Working Principle of Magnetostrictive Level Transmitter
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Working Principle of Magnetostrictive Level Transmitter The Magnetostrictive Level Sensor consists of three parts: probe rod, circuit unit and float. When measuring, the circuit unit generates current pulse and this pulse transmits downward along the magnetostrictive line and thus generates a ring-form magnetic field. The float is equipped probe rod outside and the float along the probe rod moves upward and downward with the change of the liquid level. Because a group of permanent magnets are mounted inside of the float, the float generates a magnetic field at the same time. When the current magnetic field encounters the float magnetic field, a ”twisted” pulse or called “Return” pulse will be generated. Convert the time difference between the “Return” pulse and current pulse into pulse signal, and then calculate out the actual position of the float to accomplish the liquid level measurement. |