The eTape Liquid Level Sensor from Milone Technologies is a great way to measure the level of a liquid. It has a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. The sensor's envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed. This results in a change in resistance that corresponds to the distance from the top of the sensor to the surface of the fluid. The sensor's resistive output is inversely proportional to the height of the liquid: the lower the liquid level, the higher the output resistance; the higher the liquid level, the lower the output resistance.
Specifications:
Sensor Length: 256.5mm
Thickness: 0.381mm
Width: 25.4mm
Active Sensor Length: 218.4mm
Sensor Output: 385 ohm – 60 ohm
Resolution: 0.794mm
Power Rating: 0.5 Watts
3-pin version: Center pin is inactive, use only 1st and 3rd pin.
4-pin version: pin 1 and 4 are Reference Resistor (Rref), pin 2 and 3 are the Sense Resistor (Rsense).
Use like an LDR (Light Dependent Resistor), LDR changes resistance against light; this sensor changes resistance against liquid level.
International
Singapore
Malaysia
Thailand
Vietnam
