The photoelectric oil-water interface sensor uses the difference in conductivity between oil and water media. The light is at the interface of the two different media, so that the reflected light intensity received by the light-receiving transistor inside the sensor is different, which corresponds to two different switching states. The oil-water interface sensor can detect the height of the oil-water interface and output related signals to achieve the purpose of detecting the height of the oil-water interface.
The oil-water separation sensor does not require manual intervention, which is automatically calibrated. It is not affected by changes in the medium. That means the same sensor, regardless of whether the detected medium is water, gasoline or diesel, and no matter how the temperature changes, the oil-water separation sensor can correctly output an accurate reading.