A low voltage AC signal is applied between the probe electrode and the tank wall or reference electrode in the case of a non-metallic tank. When the liquid comes into contact with the electrode tip, a conductive path is established between the sense electrode and the metallic tank wall/reference electrode. Current flow due to the conductive path is sensed, amplified and used to switch a relay for indication or control purposes.
Level switches for conductive media, designed to operate in tough industrial environments
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Vibrating level switches for dry bulk materials
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Side mounted switches for high or low alarm duties
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Thermal dispersion switches of gas and liquid flow, liquid level and interface
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