High accurac,high reliable and high stability Small size,low cost and easy installation The protection class is IP68 can work under the water. Submersible level transmitter , based on the principle that, the hydro static pressure of measured level is proportional to the height of this liquid , adopts the piezoresistive effect of diffused silicon , converts pressure into electrical signal, by temperature compensation and linear calibration , then converts into standard current , voltage and RS485 signals and outputs . It can be directly connected with PLC/DCS ,display instrument and computer , remote signal transmission also can be carried out.