Unformatted text preview: rements. It is for example
also possible to achieve explosion protection by means of encapsulation.
The above details merely serve as a rough guide; definitive information is available
through relevant standards. NAMUR proximity sensors (inductive, capacitive and
magnetic) and NAMUR circuit amplifiers are available from a large number of
manufacturers. 15.1.3 Magnetic field proof (welding plant) inductive proximity sensors
Inductive proximity sensors resistant to magnetic fields are used in the vicinity of
welding equipment. Their mechanical and electrical properties by far exceed those
of ordinary proximity sensors.
The overall surface of the proximity sensor must be resistant against any occuring
Particularly high demands are made on the electronics due to the fact that in the
vicinity of such welding equipment currents flow in the kA range. These currents
cause a very strong magnetic field and would interfere with the function of an
ordinary proximity sensor because the proximity sensor coil repres...
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- Spring '12
- pH, proximity sensors, Festo Didactic GmbH, Festo Didactic GmbH & Co