Thursday, February 08, 2007

Electromechanical and electromagnetic switches

Bernstein designs and manufactures electromagnetic sensors for a broad range of applications.

Bernstein designs and manufactures electromagnetic sensors for a broad range of applications. These high-quality electromagnetic components are based on reed-contact and electronic (Hall, magnetoresistive) technologies. For industrial applications the particular advantage lies in the physics of the technology as there are a number of nonmagnetic metals that allow magnetic fields to penetrate unhindered.

That is why an electromagnetic sensor can be completely encapsulated in a pressure-resistant metal housing.

They can also be concealed in pipes or tubes and even behind metal surfaces (eg aluminium, brass, stainless).

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.

The greatest inherent advantage is that they are insensitive to shock, impact, vibration and are absolutely resistant to wear.

High operating frequencies, long operating distances, broad operating temperature ranges and excellent repetition accuracy make these switches to an invaluable proc-ess component.

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.

Reed contacts have always played an important role in electromagnet sensors.

They do not require an external power source and with the proper contact protection they can directly switch AC and DC current loads.

This type of contact has an extended operating temperature range from -30degC to +150degC.