BLM

WIKA is a global market leader in pressure and temperature measurement technology. With over 75 years of experience, WIKA instruments are trusted in process industries worldwide. Glorient is a professional supplier of genuine WIKA products with competitive pricing and fast worldwide delivery.

Continuous level measurement on the outside of the bypass 2-wire technology 4 ... 20 mA Measured value output via digital interface and a selectable measured value as analogue signal Case from stainless steel (display from glass) Magnetostrictive level measuring instrument with high resolution

Level transmitters with a magnetostrictive, high-resolution measuring principle are used for continuous level measurement of liquids and are based on determining the position of a magnetic float following the magnetostrictive principle. The level transmitters are mounted on the outside of a bypass level indicator. The measuring process is triggered by a current impulse. This current produces a circular magnetic field along a wire made of magnetostrictive material, which is held under tension inside the sensor tube. At the point being measured (liquid level) there is a cylindrical float with permanent magnets acting as a position transducer, whose field lines run at right angles to the impulse magnetic field. This magnetic field of the float tensions the wire. The superposition of these two magnetic fields triggers a mechanical wave in the wire. This is converted into an electrical signal at the end of the wire in the sensor housing by a piezoceramic pick-up. The measured propagation delay enables the origination point of the mechanical torsional wave, and thus the float position, to be determined with high accuracy.

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