... of medium 4CE.UL.RoHS Universal ultrasonic level meter for distance measurement Ultrasonic levelmeter working principle: the probe launch a ... , Such as: storage tank, materials trough, pool, well, Drains, measuring boxes, granaries, silo, etc.Specifications1.Power supply: DC24V(±10%),30mA2 ... : stroke 0.03%4.Parameter set: 3 touch buttons5. Sensor material:ABS /PVC6. Output signal: 4~20mA 2-wire, ...