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These Level Transmitters work on capacitive principles. An active probe is inserted into the vessel and the conductive wall (or a reference rod if the wall is non-conductive) create the plates of a capacitor. If there is nothing but air inside the vessel the capacitance is c0 but as more solid is added the capacitance level also increase.

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Semrad Pty Ltd is a leading Australian distributor of level switches and level transmitters, designed specifically for harsh industrial applications, including caustic and chemical solutions.

Semrad is dedicated to providing customers with the most cost effective and technically advanced solutions for the measurement and control of liquid and bulksolids level.
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