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Normative Requirements for Special Applications


Magnetic field sensors can be designed to meet the prerequisites for use in special areas.


Plants with Increased Safety Requirements

Explicitly increased safety requirements can be based on certain typical safety risks at a plant—the framework is then specified by European law. This is the case with Directive 2014/34/EU. Safety requirements may also be based on specific requirements of individual countries, such as China Compulsory Certification (CCC), the Canadian Standards Association (CSA) in Canada, and Underwriters Laboratories Inc. (UL) in the USA. For products to be used in certain environments, they must be approved for those areas of application. Magnetic field sensors may have approvals for CCC, CSA, or UL.

Hazardous Areas

Magnetic field sensors may be used in explosion-hazardous areas if they have the following type of ATEX or IECEx approval:

  • Equipment protection level Ga ... Gc: sensors for gas hazardous areas, Zone 0 … 2,
  • Equipment protection level Da ... Dc: sensors for dust hazardous areas, Zone 20 … 22, or the components must be marked accordingly.

Safety Integrity and Performance Level

To ensure safety integrity in a safety loop of a plant, safety sensors can be used in conjunction with performance level (PL d) according to ISO 13849-1 (functionally safe).

With appropriate planning and integration into the safety loop of a plant, a level of safety integrity up to SIL 3 or performance level PL d is possible.

This applies to Pepperl+Fuchs sensors in the 40FY* and 50FY* series with magnets for use with:

  • Safety switch amplifier ("logic controller") FYQLA1-140R-3
  • Safety monitor KE5D2-6H/2R-S

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