These are capacitive sensors sensible to all materials and amplified D.C. or A.C. in the M18 and M30 versions.
These sensors are part of the ATEX series, have a built-in device that interrupts irreversibly its functionality when norm limit temperature >+75°C has beenexceeded in rigorous respect of values indicated on product label. Such a solution makes the device “safer” in potentially explosive environment. Comply to Directive ATEX 2014/34/EU Group II, Category 3 dusty environments D (zone 22), Directive Electromagnetic Compatibility 2014/30/EU.
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