Today, hand sanitizer is available in many public places. Before, the hand sanitizer was put in a bottle. We need to press the nozzle to squeeze the hand sanitizer. However, because it is available for public use, hand sanitizer bottles are touched by many people. Touch is also very unhygienic. At this point, the automatic hand sanitizer slowly appears, which automatically controls the liquid outflow without squeezing the hand sanitizer.

And automatic control of the liquid, it is necessary to ensure that hand sanitizer is equipped with hand sanitizer for a long time, artificial inspection will be very inconvenient, so it is necessary to have a function is the liquid level reminder. The level reminder function can be achieved using a capacitive level sensor.

Capacitive liquid level sensor is a liquid level detector, which can output different signals according to the liquid and no liquid. The equipment controller can open the inlet valve to keep the liquid level constant according to the signal output of the liquid level sensor.

When the height of the liquid in the container changes, it causes its capacitance to change. It can convert the change of liquid level height into a standard current signal, which can alarm or automatically control after the device receives the signal. In order to achieve the effect of the fluid level reminder, which is also what it plays in the hand sanitizer machine.

Moreover, the capacitive liquid level sensor has high reliability and is non-contact detection, so the liquid corrosion has no impact on the sensor. For example, the liquid in the hand sanitizer is hand sanitizer, which can also be capacitive. And compared with other floating ball liquid level sensors, electrode liquid level sensors need to open holes in the container, the container can not move, capacitive liquid level sensors can move because no contact liquid, so the container. The big advantage of capacitive liquid level detection is that the water level or liquid change in the container can be detected by any medium. The dirt and sediment in the tank container will not affect the results of the test.

Moreover, the capacitive liquid level sensor has high reliability and is non-contact detection, so the liquid corrosion has no impact on the sensor. For example, the liquid in the hand sanitizer is hand sanitizer, which can also be capacitive. And compared with other floating ball liquid level sensors, electrode liquid level sensors need to open holes in the container, the container can not move, capacitive liquid level sensors can move because no contact liquid, so the container. The big advantage of capacitive liquid level detection is that the water level or liquid change in the container can be detected by any medium. The dirt and sediment in the tank container will not affect the results of the test.