email: info@shiva-electronics.com |
email: photosw_nsk@sancharnet.in |

Capacitive Proximity Switches are used for the non-contact detection of any objects. In contrast to inductive switches, which only detect metallic objects, capacitive sensors can also detect non-metallic materials. Typical application are in the wood, paper, glass, plastic, food and chemical industries. Capacitive Sensors for example monitor that the contents of a cardboard box are complete or check the presence of the non-metallic caps. Another application is to monitor the conveying of sheets of glass on a roller conveyor.

Operating Principle Of Capacitive Proximity Switches

The capacitance between the active electrode of the sensor and the electrical earth potential is measured. An approaching object influences the electrical alternating field between these two " Capacitor Plates". This applies to metallic and non-metallic objects. In principle, capacitive sensors work with an RC oscillator. A very small change in capacitance is enough to influence the oscillation amplitude. The evaluation electronics converts this into switched signal. The user can set the sensitivity with a potentiometer.
DC Capacitive Proximity Switch Specs Sheet

Copyright © 2015, Shiva Electronics. ALL RIGHTS RESERVED.
Designed and developed by Digital Space Inc.