Turck Capacitive Sensors:

One of the major benefits of capacitive sensors is their ability to sense through low-dielectric materials. With the sensitivity properly adjusted, these sensors can be used to "see through" an object wall to detect its contents.

From inspecting jars through a cardboard box to sensing ammonia in a vat - capacitive sensors are made for these applications. In addition, capacitive sensors have the ability to sense most materials including wood, plastics, cardboard, glass, grain, all metals and most fluids. The versatility of these sensors can help you save time and run more efficiently.

Many applications require adjusting the sensitivity of the capacitive sensor in order to reliably detect the target material. Although the potentiometer is factory set for an operating distance of 0.7 to 0.8 times the rated operating distance, it can be easily changed.

Most Turck capacitive sensors are listed as embeddable. By increasing the sensitivity, the embeddable sensor can be changed into a non-embeddable version with enhanced sensing capabilities.

Capacitive sensors can be adjusted two ways in order to sense a target consistently.
1. Physical adjustment - moving the sensor towards or away from the target is the preferred method of adjusting sensitivity when the sensor is not in direct contact with the target.

2. Adjustment of the potentiometer - turning the potentiometer in a clockwise direction increases the sensitivity of the sensor. Increasing the sensitivity results in a greater operating distance to both conductive and non-conductive targets.