DRD-E
Conventional Infrared
Flame Detector
Installation Manual
Page 2 of 12 DRD-E Flame Detector Installation Manual
This manual details the installation of:
DRD-E Flame Detector
If you have any queri es regarding these products or their functionality please contac t:
Hochiki Europe (UK ) Limited
Grosvenor Road
Gillingham Business Park
Gillingham
Kent ME8 0SA
Tel: +44 (0) 1634 260133
Fax: +44 (0) 1634 260132
Web: http://www.hochikieurope.com
Email: psupport@hochikieurope.com
DRD-E 0832-CPD-1347 10 EN54-10 Flame detectors – point detectors
©2010 Hochiki Europe (UK ) Ltd. All rights reserved. No part of this document may be reproduced, stored in
a retriev al system, or transmitted, in any form or by any means, without the prior permission in wri ting of
Hochiki Europe ( UK ) Ltd.
Hochiki Europe ( UK ) Limit ed r eserves the right to alter the specifications of its products fr om time to time
without notice. Although every effort has been made t o ensure the accur ac y of the information contained in
this document it is not warranted or represented by Hochiki Europe (UK) Limited to be a com plete and up-todate description.
Document Detail s:
Title: DRD-E Flame Detector - Installation Manual
Issue 1.0
Issue Date November 2010
Part No. 2-3-0-1376
2-3-0-1376/ISS1/NOV10
© 2010 Hochiki Europe (UK) Lt d
DRD-E Flame Detector Installation Manual Page 3 of 12
Table of Contents
1 General................................................................................................................................................ 4
1.1 Description.................................................................................................................................. 4
1.2 Alarm Response Modes..............................................................................................................4
1.3 IR Detection Basics..................................................................................................................... 4
2 Application.......................................................................................................................................... 6
2.1 Detecta b le Fire Sourc e s.............................................................................................................. 6
2.2 Typical Ap p l ica tions........................................................................................................... ..........6
2.3 Applications and Locat ions to Avoid:............................................................................................ 6
3 Quantities and Positioning................................................................................................................. 7
3.1 Field of View...............................................................................................................................8
3.2 Detector Window Contamination.................................................................................................. 9
3.2.1 Cleaning ................................................................................................................................. 9
4 Installation......................................................................................................................................... 10
4.1 Functional Testing..................................................................................................................... 11
4.2 Service & Repai r s...................................................................................................................... 11
5 Detector Specifications .................................................................................................................... 12
5.1 Compatible Bases..................................................................................................................... 12
© 2010 Hochiki Europe (UK) Lt d
2-3-0-1376/ISS1/NOV10
Page 4 of 12 DRD-E Flame Detector Installation Manual
1 General
1.1 Description
The flame detector is designed for use where open flaming fir es may be expected. It responds to the light
emitted fr om flam es during combustion. The detector discrim inates between flames and other light sources
by responding only to particular optic al wav elengths and flame flicker frequencies. This enables the detector
to avoid false alarm s due to such f ac tors as flickering light sources.
1.2 Alarm Response Modes
The detector i s normally configured to latch into an alarm state when a flame is detected. The supply t o the
detector has to be rem ov ed in or der to reset the detector.
1.3 IR Detection Basics
Flame detect or s are classif ied into two types by their principle of detection. UV detector s are sensitive to
ultraviolet, and IR detectors are sensitive to infrared.
This DRD-E detector c an detect IR radiated from flames. Fl am es radiated from a fire have an IR peak
emission of 4.3um occurr ing during the CO2 formation due to the c om bust ion of hydrocarbons from 2 to 15
Hz.
Fig 1 : External View of DRD-E
2-3-0-1376/ISS1/NOV10
© 2010 Hochiki Europe (UK) Lt d
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