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1.4 EEx-p Controller F-351
The EEx-p controller F-351 is a high-performance EEx-p system that opens up completely new
applications in the Ex-Zones 1 and 2 of Group IIC T4. It serves to generate and monitor an
overpressure in an EEx-p enclosure, in order to prevent the ingress of the surrounding
atmosphere, which may consist of a potentially explosive gas mixture.
The controller is part of a product family of EEx-p controllers and is optimally designed to meet a
variety of requirements. The world smallest system complies with the state of the art in EEx-p
system technology.
Multiprocessor technology as well as consistently redundant signal acquisition and processing
ensure that the safety level AK4 is met.
• smallest system worldwide for new possibilties realizing Ex p protection in ex areas
• Robust and wear-proof sensor engineering
• Robust, acid-and oil-resistant GRP enclosure, also suitable for applications in the offshore
sector
• Clear text display with choice of language, in 3 lines with 12 characters each
• Innovative and intuitive Wheel Shuttles user guidance for rapid parametrization in the field
without the need for operating instructions
• High-Flowftechnology for short purge times, even for very large EEx-p enclosures
• EEx i connection for external operating, switching and monitoring units
• Acrylic glass window with magnification effect over the clear text display
The function of the pressurized apparatus has been approved by:
TÜV 02 ATEX 1801 EEx e m ia [p] [ia] IIC T4 for use in Ex areas classified as Zone 1 and 2
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