How Inductive Sensors Work

Inductive sensors detect metallic objects contactlessly and measure the distance between the sensor and the object to be measured by electromagnetic induction. To do this, a current is conducted through a coil, creating an electromagnetic field around the coil. If an electrically conductive object such as steel or aluminum approaches the magnetic field, this is changed. The inductive sensor recognizes the change in the magnetic field and evaluates it to determine whether there is a metallic object in the vicinity.
Various Switching Outputs
A signal is present on the digital switching output as soon as the sensor has detected an electrically conductive object. The distance can be output via an analog output as a proportional voltage signal – either as a current value of 4 mA…20 mA or as a voltage value of 0 V…10 V. In the case of inductive sensors with an IO-Link interface, the switching outputs (NPN, PNP or push-pull) can be configured as normally closed or normally open contacts as well as the switching distances.
Distances de commutation avec capteurs inductifs

Facteur de correction 1
Influence de différents matériaux sur la distance de commutation
Fréquence de commutation pour les capteurs inductifs

Configurations de montage des capteurs inductifs

Capteurs noyables

Capteurs quasi noyables

Capteurs non noyables
weproTec et fréquence alternative

Vue d’ensemble des capteurs inductifs
Différence entre les capteurs inductifs et optoélectroniques
