Jectse Submersible Level Sensor 4-20mA, Throw-In Type Liquid Level Sensor,24V DC Input Liquid Level Transmitter,0-5M Measuring Range

Es un sensor muy preciso, fácilmente funcional.

I use these to provide the 4-10 ma signal that the level controller I use requires. The cord has a tube in it to equalize the air pressure, which allows it to have a more stable reading.

This sensor is sold under various brands by various firms. (The photo is identical on all offerings here on Amazon.) I have tried three brands, selecting only by price and delivery. We have 12 sensors installed measuring tank levels ranging from 8 to 15 feet in depth transmitting data to a PLC. We dropped them in the tank, filled them, then entered the empty and full readings as our scale. We now have fairly accurate depth measurements for each tank. These units replaced FlowLine EchoPod Ultrasonic sensors that cost ten times the price. The EchoPods continued to throw false readings (empty or full) at apparently random times during the day. These have been solid. The one page of instructions is in Chinese. However, the only item of interest is the photo showing the plus and negative wire. Any electronics tech will understand the obvious way to connect it.

Having trouble keeping the readings accurate across a range of 10-40inches of water.