Page 4 of catalogue Magneto resistive sensors of Rechner Industrie-Elektronik GmbH

TECHNOLOGY • MOUNTING • APPLICATION
The magnetoresistive Sensors (MRS) detect the movement of ferromagnetic materials, by means of the change of the magnetic flow. They are suitable for rotary speed sensing, for detection of gearwheels and for standstill control. Areas of use can be heavy construction Engines, rail vehicles, large Diesel engines and turbines. The magnetoresistive sensors (MRS) work like a magnetic Wheatstone bridge. They react to all ferromagnetic materials. The tooth or gap of a gearwheel, which passed the active area of the sensor, have a different influence on the magnetic field. This results in a change of the magnet-field dependent resistor. This change of the magnetic field is transformed to an electrical voltage-bridge, which then is filtered and prepared. The output signal is a voltage, which corresponds to the magnetfield change. We have two different series: Series 300 Series 350 ...-S ...-N ...-S ...-Z 3-wire PNP or NPN -wire 4-wire PNP or NPN 4-wire PNP with dephased output signal with detection of direction of rotation

The Components of the MRS are mounted in plastic or metal casings and encapsulated with epoxy casting resin. The plastics used for the housings are: PA (polyamide) 6.6 Glass-fibre reinforced PEEK (polyetheretherketone) (FDA 21 CFR 177.2415) And the metal housings are VA stainless-steel, material No. 1.4305 or No. 1.4404 (FDA conform). MS brass/chrome or nickel-plated Since the active area is made from a block material the degree of protection IP 68 is achieved on the front end. only pre-tested electronic components, proven integrated circuits and hybrid circuits are used and produced with SMT. The standard constant ambient temperature permitted is dependent on the model from -40 up to +15 °C (see data sheet). With contactless detection no physical actuating force is required for operation. There is no contact bounce, no sensor wear, no maintenance and the service life is independent of the switching frequency. MRS can be used in Machines, systems and vehicles for contactless detection, for monitoring and positioning, as a Pulse generator for counting tasks and speed measurements, and for many other applications (for application examples see page 8).

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RECHNER Industrie-Elektronik GmbH • Gaußstraße 8-10 • D-6863 Lampertheim • Tel. (0 6 06) 50 07-0 • Fax (0 6 06) 50 07-36 • e-mail: info@rechner-sensors.de • www.rechner-sensors.com

All specifications are subject to change without notice. (07/2008)