Capacitive sensors are available in various designs to suit different intended purposes and different mounting situations. Cylindrical and cubic designs are typical.
The sensing face of cylindrical sensors is located on the front face in the axial direction. These sensors are available with diameters from 12 mm ... 30 mm with thread.
Example of a typical application: cylindrical sensors are typically used where simple mounting is required, e.g., where single-hole mounting is required through a bore. Cylindrical sensors can be easily offset in the axial direction, making it easy to adjust and adapt to the application.
Typical cuboid capacitive sensors from Pepperl+Fuchs are known as VariKont sensors. Sensors of this type (housing design IC30 and IC40) have the mounting hole arrangement defined in the European standard EN 60947. This arrangement is the same as for mechanical position limit switches.
Example of a typical application: Due to the large operating distance, the ruggedness, and the installation options, the VariKont is often used in amusement park rides. However, even in industrial environments, the VariKont is used wherever large operating distances are required. A movable sensor head makes mounting the sensor much easier.
Flat packs are block-shaped sensors with a large front face (80 mm x 80 mm) and therefore a large operating distance. They consist of two parts. The mounting base contains the terminal compartment. The top part contains the connector pins and sensor element, as well as the electronics, which are vacuum-encapsulated with casting resin. The top part is always made of PBT and the mounting base either of PBT or cast metal. Flat packs have the mounting hole arrangement as defined in the European standard EN 60947 (housing design ID80).
Example of a typical application: Due to the large operating distances, the ruggedness, and the mounting concept, the flat pack (FP) is frequently found in amusement park rides. However, the flat pack can be used wherever large operating distances are required, even in large industrial environments.
Surface-mountable sensors are small capacitive sensors with attachment options for mounting onto surfaces. The sensors can be screwed onto a surface designed for this purpose. Depending on the design, the sensing face is oriented upward or forward. The housing is usually made of PBT.
Example of a typical application: surface-mountable sensors are multipurpose. They are typical all-rounders.
Take a look at the range of Pepperl+Fuchs capacitive sensors.