The automatic maintenance function detects light intensity reduction due to dirt or misalignment, and returns the sensor to its original display state. This feature can cancel the effects of the ambient environment, enabling the sensor to continue to perform highly accurate detections.
The setting value changes according to the intensity as shown in the figure to the right. This function corrects the setting value based on a running average of the received light intensity value. The correction cycle is the same as the sampling cycle and can be selected from three levels.