Fire Fighting Enterprises UV-IR2 User Manual

This document is the EExd Flame Detector Installation Guide/2013/Issue 2

Flameproof – (EExd)

UV/ IR² Flame Detector

Installation Guide

General

This Installation Guide gives information on the Flameproof (EExd) version of the flame
detectors that have been approved by ISSeP (Institut Scientifique de Service Public; notified
body number:492). The requirements of the European Community Directive 94/9/EC, the
ATmosphere EXplosives ATEX Directive have been met. The approval has been accessed by
reference to the following standards, EN50014:1997+A1 and A2:1999, EN 50018:2000 and pr
AA EN 50018 plus a review against EN60079-1:2004 which showed that there were no
changes which materially affected the “state of technological progress” with respect to the
product. EN50281-1-1:1998

The detector enclosures are certified category II 2 G D, EExd IIC T6 IP66.

The range comprises dual infra-red (IR²), triple infra-red (IR³) and UV/IR² flame detectors. The
detector housings are available in copper free aluminium alloy (LM25) and stainless steel
(316).

The guide also provides information on Flameproof (type‘d’) enclosures, the application,
maintenance, installation and adjustments of the detectors. Reference to other individual
detector publications can be made for more information on none Flameproof issues. These
publications are available on request.

Information in this guide is given in good faith, but the manufacturer cannot be held responsible
for any omissions or errors. The company reserves the right to change the specifications of
products at any time and without prior notice.

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Introduction to Flameproof Enclosures

There are many places where an explosive mixture of air and gas or vapour is or may be
present, intermittently or as a result of an accident. These are defined as hazardous areas by
EN 60079-0 (formally EN 50014), Electrical apparatus for explosive gas atmospheres –
General requirements.

Hazardous areas are common in petroleum and chemical engineering plants and in factories
processing and storing gases, solvents, paints and other volatile substances.

Electrical equipment for use in these areas needs to be designed so that it cannot ignite an
explosive mixture, not only in normal operation but also in fault conditions. There are a number
of methods available to achieve this – oil immersion, pressurised apparatus and powder filling,
for example, but the two most common used are intrinsic safety and flameproof enclosures.

Flameproof equipment is contained in a box so strong that an internal explosion will neither
damage the box nor be transmitted outside the box. The surface must remain cool enough not
to ignite the explosive mixture.

When flameproof equipment is interconnected, flameproof wiring must be used. This method is
helpful for installations in areas were explosive gas/air mixture are not present continuously or
not present for long periods.

Classification of Hazardous Areas

EN 60079-0 (formally EN50014) states that electrical apparatus for potentially explosive
atmospheres is divided into:

• Group I: Electrical apparatus for mines susceptible to fire damp;

• Group II: Electrical apparatus for places with a potentially explosive atmosphere,

other than mines susceptible to fire damp.

These flame detectors are designed to meet the requirements of Group II apparatus. For the
type of protection “d” Flameproof, Group II is subdivided into Equipment Categories, Type of
Explosive Atmosphere (Table 1), Type of Protection Code (Table 2), Temperature Class (Table

3) and Gas Group (Table 4).

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