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Capacitive sensor for aggressive media

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article image CM 18 PTFE capacitive proximity sensor.
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THE new CM 18 PTFE capacitive proximity sensor from SICK is used for checking filling levels of acids, alkalis or solvents, and for checking presence in environments with aggressive fumes and mists.

The PTFE (polytetrafluoroethylene) housing is resistant against almost all chemicals and organic solvents.

A continuously adjustable switching distance of between 3mm and 8mm, a variety of switching output options, and a high level of electromagnetic compatibility, are further advantages.

The use of PTFE for the housing, and the M18 screwed connections, allow the sensor to be employed for checking the filling levels of aggressive media, e.g. hydrochloric acid, sulphuric acid, phosphoric acid, a variety of alkalis and numerous solvents.

The same applies for object detection in environments in which such materials are present as gases, vapours or mists.

It is also suitable wherever plant has to undergo frequent cleaning with chemicals or at high temperatures.

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