The infrared water level sensor has three wires, namely power wire, ground wire and signal wire. Usually each wire has a different color, the general power wire is red, the ground wire is blue, and the signal wire is yellow. The function of the color of each wire is different to facilitate the definition of different wires.
This is the wiring drawing of EPT infrared level switch:
Generally, the infrared liquid level sensor has a built-in resistance, and there is no need to connect an external resistance when wiring, so the installation is very convenient. It can be used after connecting the circuit and installing the sensor. The installation of liquid level sensors such as infrared liquid level sensors is very convenient. Usually, the sensor head is threaded and can be directly screwed in for installation. Or the head has two holes, which can be fixed with two screws.
Because the infrared liquid level sensor has the characteristics of debugging-free, it can be used directly after installation. After the sensor is powered on, the infrared emission tube of the sensor will emit infrared rays. If no liquid is encountered, the infrared will not have any effect, and the receiving tube receives light normally. Refraction occurs when liquid is encountered, the receiver tube can only receive a small amount of light, and the sensor output port will achieve high and low level conversion.
Because EPT's infrared liquid level sensor has the characteristics of low price, high accuracy and high reliability, it is widely used in coffee machines, water dispensers, electric steamers, water heaters, toilets, water pumps, humidifiers and other household appliances, as well as in hydroponics Industry, medical industry, industrial equipment have applications.