Inductive proximity sensors
These sensors detect the presence of metal objects without contact. The electromagnetic field they generate is attenuated by the proximity of a metal target and this then triggers a change of state at the sensor output.
Principle
On the sensing face of the sensor, a ferrite core concentrates a high-frequency electromagnetic field generated by a coil by means of an LC oscillating circuit.
When a metal object enters this field currents are induced in it which draw energy from the oscillator and cause a reduction in the amplitude of the oscillations.
Consisting of a Schmitt trigger, a signal-shaping stage evaluates the amplitude of the signal delivered by the oscillator. Depending on the voltage attenuation measured, it triggers a change in the state of its output which controls the output stage of the sensor.
Special products
SENSTRONIC is at your disposal to discuss special applications or development requests. Do not hesitate to contact our sales department.
Overview of the SENSTRONIC RANGE
Body shape
- Cylindrical from L04 to M30
- Rectangular from Q08 to Q80
Main features*
- Connection type 2-wire or 3-wire
- Operating distances standard or increased
- Voltage type DC or AC/DC
- Allowable temperature up to 120°C
- Allowable pressure up to 500 bar
- Materials stainless steel, teflon, nickel-plated brass, ceramic, specific plastic
- Connection cables, connectors
* depending on the application and environment
