These meters are portable devices for measuring of electrically non-conducting liquids layers thickness; it is the question of liquids insoluble, immiscible in water, thus creating interface either with level or bottom commensurate with its volume weight. The device is good for operative application in bores, basins, tanks, and wherever for thickness determination of monitoring of electrically non-conducting liquid circumscriebed by air or water. Phases signalling: both optic and acoustic.
Advantages: simple hadling; dependability; simple optic/acoustic signalling; instant environment indication; probe self-cleaning capability; automatic signalling low voltage and/or breakdown; mechanism robustness and easy cleaning.