Magnetic proximity switches

Magnetic proximity switches

Magnetic proximity switches selectively detect switching marks made of ferromagnetic steel. Non-magnetic materials do not affect the function of the proximity switches.
The encoders are characterized by their robustness, high switching frequencies and high temperature stability. Almost any pressure resistance can be achieved by using closed metal housings.
Distance sensors with a resolution in the micrometer range are available on request. These are a combination of the magnetic operating principle of the proximity switches with low-noise, analogue signal electronics.

Features of magnetic proximity switches

- Selective detection of ferromagnetic switching marks
- Pressure resistance up to 1,000 bar, also dynamic
- Switching distance up to 8 mm - beyond that on request
- Flush or non-flush installation possible
- Supply voltage optionally up to 60 VDC
- Current carrying capacity optionally up to 300 mA
- Working temperature -60 … 125 °C – beyond that on request
- High resistance to temperature changes
- Comparatively extremely short response time (switching frequency up to 15 kHz)
- Closed, pressure-resistant metal housing
- Resistance to oils, salts, alkalis, acids
- Suitable for industrial cleaning with water or steam jets
- High vibration and shock resistance

Applications Magnetic proximity switches

- Piston detection in hydraulic cylinders
- Drive units of vehicles and ships
- Detection of ferromagnetic parts through walls made of e.g. aluminium, magnesium, stainless steel
- Aviation
- Highly dynamic distance measurement with a resolution in the micrometer range