How does the water dispenser detect water level drop? The  coffee machine  needs to be equipped with a liquid level detector. The photoelectric liquid level detector mainly uses optical principle to detect the liquid level. When the liquid level drops, it receives the light emitted by the transmitting tube, outputs high voltage, and judges the anhydrous state.

The photoelectric liquid level sensor is usually installed at the bottom of the water tank. When the water level drops to the bottom, the sensor will send a signal of water shortage, and the equipment will stop working and enter the state of adding water, which can effectively prevent dry burning.

When the photoelectric liquid level sensor is installed on the side, the sensor will send a signal to prevent the liquid from overflowing when the equipment is filled with water to the specified position.

The photoelectric liquid level sensor has low price, convenient installation and high accuracy. Its principle is optical reflection. The color and temperature of the liquid have little influence on it. The sensor can be used in the fields of beverage machines, water pumps, household appliances and liquid level power-off protection.

Shenzhen Nengdian Technology Co., Ltd. is a high-tech company specializing in research and development, production and sales of various liquid level sensors, flow control sensors, photoelectric position sensors, photoelectric dumping sensors and other products.