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Unformatted text preview: bH & Co. KG • FP 1110 3. Magnetic proximity sensors 3.2.4 Examples of application
One of the most common fields of application for contactless magnetic proximity
sensors is, as in the case of reed proximity sensors, position sensing with pneumatic
cylinders. They can however be used for many other applications, similar to reed
proximity sensors, refer to 3.1.4. 3.3
proximity sensors 3.3.1 Function description
A pneumatic valve is switched by means of a permanent magnet, thereby generating
a control signal. a) b)
Switching reed (1) Permanent magnet on piston (2) Flexible conduit (3) a) The proximity sensor is unactuated, a switching reed interrupts the air flow from 1.
b) The switching reed is actuated by a magnetic field, the air flows from 1 to 2. Fig. 3.3.1: Principle of application of a magnetic-pneumatic proximity sensor for detection of cylinder positions © Festo Didactic GmbH & Co. KG • FP 1110 45 3. Magnetic proximity sensors 3.3.2 Technical characteristics Parameter Value Operating pressure range 400 – 600 kPa (4 – 6 bar) Signal pressure (supply pressure 500 kPa) 8 kPa (80 mbar) Switching accuracy ±0.2 mm Maximu...
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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.
- Spring '12