The optic level sensor can be applied to washing machines, water dispensers, electric steamers, coffee machines, water heaters, facial sprayers, milk machines, dishwashers, aromatherapy machines, etc. Liquid vary from de different devices. What kind of liquid can the photoelectric level sensor detect?
(1) Purified water. Drinking water does not contain any impurities, and in this environment, many level sensors are also suitable.
(2) Sewage. Contaminated wastewater includes floats, sediments, dirt, etc. Relatively few types of sensors can be used in this environment, but the photoelectric level sensor can work normally in sewage environments. The water tank material of other sensors such as the capacitive liquid level sensor cannot be metal; the floating ball liquid level sensor is easy to jam, and there must be no obstacles under the ultrasonic liquid level sensor.
(3) Viscous liquid. Viscous liquids include beverages, nutrient solutions, motor oils, shampoos, etc.
4) High and low temperature liquid. The photoelectric level sensor can detect high and low temperature liquids, such as 90 ° hot water and -25 ° low temperature liquids.
5) Corrosive liquid. Such as petroleum, diesel and other corrosive liquids. The housing of the photoelectric level sensor can use PSU material to detect corrosive liquids.
6) Various alcoholic liquids. Such as beer, red wine, white wine, etc.
The optic level sensor contains a near-infrared light-emitting diode and a photosensitive receiver. The light emitted by the light-emitting diode is directed to a lens on the top of the sensor. When the lens of the optic level sensor is immersed in the liquid, the light is refracted into the liquid, so that the receiver cannot receive or can only receive a small amount of light. The optic level sensor senses this situation, and the receiver can drive the internal electrical switch, thereby starting an external alarm or control circuit to implement functions such as water shortage protection or high level alarm. If there is no liquid, the light from the LED is reflected directly from the lens back to the receiver. This is the principle of the photoelectric liquid level sensor.
The optic level sensor uses the principle of optical refraction to detect liquid. It is less affected by the liquid and has a wide range of applications. It can be used to detect various liquids.