As the magnetic field approaches eg permanent magnet

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Unformatted text preview: m magnetic interference induction 0.2 mT Switching frequency approx. 50 Hz Ambient operating temperature -20 – +60 °C Table 3.3: Technical characteristics of a magnetic-pneumatic proximity sensor (example) The proximity sensor corresponds in principle to an air barrier, whereby a switching blade continually interrupts the air flow of an impending signal. As the magnetic field approaches (e.g. permanent magnet on the piston of a cylinder) the switching blade is attracted and releases the air flow, thus creating a signal at the outlet. Some sensor types are operated in combination with a pressure amplifier. 3.3.3 Notes on application The distance between two magnetic-pneumatic proximity sensors should be at least 50 mm. It should be checked that the available magnetic field is sufficient for the reliable operation of the proximity sensor. If the low pressure output signal is to be used for further processing, then it is recommended to fit a pressure amplifier in series. 3.3.4 Example of application Magnetic-pneumatic proximity sensors are primarily used for position sensing of pneumatic cylinders. They are particular...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.

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