What types of liquid level sensors are there? In which fields is it applied?

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1. Photoelectric liquid level sensor

Photoelectric liquid level sensors are divided into: integrated single-point photoelectric liquid level sensor (contact type), integrated multi-point liquid level sensor (contact type), split type liquid level sensor (non-contact type), pipeline photoelectric liquid level sensor, Stainless steel level sensor. The difference between the integrated single-point type and the integrated multi-point type is that the single-point type can only detect one liquid level point, while the multi-point type can detect multiple liquid level points at the same time. Its application fields are almost the same (for example: humidifiers, water purifiers, coffee machines, dishwashers, etc.); the split liquid level sensor is installed on the outside of the water tank to detect the water level. The advantage of installing this sensor is that the water tank can It can be disassembled and cleaned at any time, without structural interference, simple and beautiful. Generally used in (milk machine, coffee machine, humidifier, fish tank, pet water dispenser, etc.); pipeline photoelectric liquid level sensor uses a set of infrared optical components to form a sensing circuit after precise structural processing, and by judging whether it is in water or air It can make state judgment quickly and stably, effectively solve the problem of low precision/stuck failure of traditional mechanical type, and also solve the uncontrollable failure caused by capacitive sensitivity attenuation. Applied to (water level detection of clean water pipelines such as sweeping robots, washing machines, mops, humidifiers, etc.). Stainless steel liquid level sensors have high pressure resistance and corrosion resistance and are generally used in (commercial equipment, industrial equipment, medical equipment)

2. Capacitive liquid level sensor (non-contact type)

The installation method of capacitive liquid level sensor is external installation, no need to open holes, and the volume is small. When using, it is necessary to keep the surface of the sensor dry, and there should be no metal or magnetic field around the probe to avoid interference. Applicable occasions (printers, hand sanitizers, water dispensers, medical equipment, etc.)

3. Ultrasonic liquid level sensor (non-contact type)

Ultrasonic liquid level sensors are generally installed on the top of the water tank, application cases (household reservoirs, wells, tanks, industrial equipment, etc.).

How the liquid level sensor works

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How the liquid level sensor works

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