... 4CE.UL.RoHS Ultrasonic water level meter for water\liquid level measurementUltrasonic level meter working principle: the probe launch ... : storage tank, materials trough, pool, well, Drains, measuring boxes, granaries, silo, etc.Specifications1.Power supply: DC24V(±10%),0.1A ... Capacitance position and level sensor,Ultrasonic displacement sensor/level meter for industrial,mobile and oil,gas,fuel markets. ...