“Speaking of liquid level sensors, many people may not know, but in fact, liquid level sensors have been found in every corner of our lives. In daily life applications, the applications of liquid level sensors are various, and the relative application conditions are also different. Some applications use transparent water tanks for liquid level detection, and some applications are to detect various liquids, such as room temperature clean water, laundry detergent, etc.

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Speaking of liquid level sensors, many people may not know, but in fact, liquid level sensors have been found in every corner of our lives. In daily life applications, the applications of liquid level sensors are various, and the relative application conditions are also different. Some applications use transparent water tanks for liquid level detection, and some applications are to detect various liquids, such as room temperature clean water, laundry detergent, etc.

Nowadays, with the development of society and technological progress, many liquid level measurement sensors with backward measurement methods have been eliminated. Only sensors with the latest measurement technology, measurement speed and accuracy that meet certain requirements can survive in the Internet of Things era.

There are many types of liquid level sensors. The photoelectric liquid level sensor has a unique advantage in the liquid level sensor market with its advantages of accurate measurement, high accuracy, fast response, advanced technology, and low power consumption. The photoelectric liquid level sensor uses the principle of optical reflection to detect the liquid level according to the reflected light received by the internal receiving tube. When the sensor head is in an anhydrous state, the light is directly reflected and the receiver. When the sensor head is covered by liquid, light will be refracted in the liquid, and only a small part or no light will be reflected back to the receiver inside the sensor.

On the other hand, the photoelectric liquid level sensor can also be divided into single-point and multi-point. The volume of the photoelectric probe is relatively small, and multiple photoelectric probes can be installed on a measuring body to make a multi-point liquid level sensor. A photoelectric liquid level sensor can detect multiple liquid level points. The British SST photoelectric liquid level sensor/photoelectric level switch-LLC200D3SH provided by Gongwang provides single-point liquid level detection and TTL compatible push-pull output. The design sensor contains an infrared emission source and a detector, and the installation position is accurate to ensure that the two achieve a good optical coupling in the air. When the tapered end of the sensor is immersed in the liquid, the infrared light will be transmitted out of the tapered surface, and the intensity of the light reaching the detector will be weakened.

The LLC series photoelectric liquid level sensor (industrial grade, photoelectric water immersion sensor) is specially designed for industrial applications. Capable of handling heavy-duty environments in industrial applications. This series of products are suitable for a wide voltage range power supply environment, and the drive current can reach 250mA. Therefore, this series of sensors can directly drive alarms and other equipment.

Photoelectric liquid level sensor/photoelectric liquid level switch LLC200D3SH (industrial grade) characteristics:

1) M12 or 1/2” SAE interface

2) Three-wire electrical interface

3) 250mA output

4) There are two versions of normal temperature and high temperature type to choose from (high temperature can reach 125 degrees Celsius)

Photoelectric liquid level sensor/photoelectric liquid level switch LLC200D3SH (industrial grade) electrical characteristics: