Mahalaxmi instruments offers level controller conductivity based. This technology is based on the fact that many liquids have sufficient conductivity to complete a circuit. When a conductive liquid touches the tip of an electrode probe, the completed circuit can send enough current to trigger a set of contacts to turn devices on or off as desired. Three leds are provided to indicate low level high level and mains on condition. Outstanding features of these systems are no moving parts; free from maintenance; no special cable required for signal transmission; long cable connection permissible between probe and evaluation unit; low voltage on probe for operational safety; ac on probe for preventing electrolytic deterioration of electrodes and two point action for automatic pump control.
