Oldham MX 52, Installation Manual

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The MX52 central unit designed to measure explosive gasses and oxygen complies
with the requirements of European Directive ATEX 94/9/EC on potentially explosive
atmospheres.
As a result of its metrological performance, as tested by the research and testing
organisation INERIS, the MX52 device, is classified as a safety device when used with
OLDHAM CEX300 and OLC/OLCT 20, 40, 50 and 60 series detectors. The device may
therefore contribute to limiting the risk of explosion as a consequence of the data it supplies to
external units.
The information contained in the following paragraphs should be adopted and
complied with by the person responsible for the site on which the equipment is installed.
Please refer to the provisions of European Directive ATEX 1999/92/EC on improving health
and safety conditions for workers exposed to potentially explosive atmospheres.
5.1. SPECIFICATIONS FOR MECHANICAL AND ELECTRICAL
INSTALLATION IN CLASSIFIED AREAS.
Installation will comply with all applicable standards, and particularly with EN 60079-
14, EN 60079-17 and EN 50281-1-2.
The MX52 device must not be subject to intense mechanical vibration and must be
installed in a safe area away from potentially explosive atmospheres.
It is essential to refer to the user and installation manuals for the gas detectors referred
to above, particularly the paragraph entitled ‘Special Specifications for use in Potentially
Explosive Atmospheres in Accordance with European Directive ATEX 94/9/EC’
Where intrinsic safety installations are concerned, it should be borne in mind that the
person responsible for IS installation (the “System Designer”) must draw up a system
document demonstrating that every aspect of the Power Cable Detector system complies with
intrinsic safety. Please refer to EN 50039 for group II and EN 50394-1 for group I when
drafting this document.
5.2. METROLOGICAL SPECIFICATIONS
The device complies with the following European standards:
With explosive gas detectors:
- European standards EN 50054 and EN 50057 for Methane (calibration gas),
Propane and Hydrogen (gasses following response curves) where the device is
used with CEX300 and OLC/OLCT 20, 40, 50 and 60 series gas detectors. Where
the device is used with other types of sensor producing an output measurement
current of 4/20 mA, these must comply with paragraph 1.5 of Appendix II of the
ATEX 94/9/EC Directive and be compatible with their characteristics (cf. device
transfer curve).