Magnetostrictive liquid level sensor working principle Magnetostrictive liquid level sensor is based on the principle of magnetostrictive measurement developed, can accurately measure the liquid level, interface height and temperature, with high accuracy, stable and reliable, anti-jamming, installation Easy and quick, free of regular maintenance and calibration.
Magnetostrictive liquid level sensors are suitable for precise measurement of various liquid surfaces and interfaces in hydrology, water conservancy, water resources, petrochemical, electric power, biologicals, grain, oil, and brewing industries.
When the magnetostrictive liquid level sensor is in operation, the signal detection unit issues an interrogation current pulse, which generates a ring-shaped pulsed magnetic field along the waveguide wire. The outer tube of the sensor is equipped with a float, which floats on the surface of the liquid to move. Since the float is equipped with a set of permanent magnets, the float also generates a magnetic field.
When the interrogating current pulse magnetic field interacts with the float magnetic field, a "distorted" pulse or "return" pulse is generated, and the "return" pulse propagates upward along the waveguide wire and is transmitted to the vibrator. According to the time difference between the "return" pulse and the interrogation current pulse, the actual position of the float is calculated so that the liquid level can be accurately measured.
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