Electromagnetic switches for industrial applications
11 August 2004Switches, Relays & Keypads
Access Control & Identity Management
Residential Estate (Industry)
A range of electromagnetic sensors suitable for a broad range of industrial applications, is available from Anglo Allied Engineering.
Designed and manufactured by the German company Bernstein, these high quality electromagnetic sensors are based on reed contact and magnetoresistive or Hall electronic technologies.
Reed contacts have always played an important role in electromagnetic sensors. They do not require an external power source and with the proper contact protection they can directly switch from AC to DC current loads. This type of contact has an extended operating temperature range from -30°C to +150°C.
The physics of the sensor technology is such that there are a number of non-magnetic metals used that allow magnetic fields to penetrate unhindered. The sensor can be completely encapsulated in a pressure-resistant metal housing or concealed in pipes or tubes, or even behind such metal surfaces as aluminium, brass or stainless steel.
Electronic solenoid switches equipped with either magnetoresistive or Hall elements are becoming increasingly popular in a range of applications. They can be used to record positions, angles or rotary speeds. Irrespective of the magnetically sensitive element deployed, with this type of sensor a magnetic field generated by permanent and DC magnets always triggers the switching operation.
The greatest advantage is that they are insensitive to shock, impact and vibration and are resistant to wear. High operating frequencies, long operating distances, broad operating temperature ranges and superior repetition accuracy make these switches invaluable to the process component of industry.
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