Intrinsic safety, I.S., interfaces are implemented between the process detection and the major control system. The transmitted signal from the I.S. interfaces can be analogue, digital or HART®.

PR electronics’ I.S. interfaces are marketed worldwide and designed to meet the terms of the strictest international standards from the processing industry. Thus, the modules for Ex-signal conditioning comply with both European and American standards.

ATEX is the name of a European directive concerning material for hazardous atmospheres. The I.S. interfaces are adapted to this directive and meet the demands of the EN 50 014, EN50 020 and EN 50 282-1-1. Thus, the I.S. interfaces are certified to function as associated equipment for potential hazardous atmospheres. According to the ATEX directive the I.S. interfaces from PR electronics can function in the following potential hazardous areas:

* Group 2 (surface industry)
* Zones: Zones 0, 1, 2 for the inflammables gas, mists and vapors as well as Zones 20, 21, 22 for inflammable dust.