ISO 7240-27:2018
(Main)Fire detection and alarm systems — Part 27: Point type fire detectors using a smoke sensor in combination with a carbon monoxide sensor and, optionally, one or more heat sensors
Fire detection and alarm systems — Part 27: Point type fire detectors using a smoke sensor in combination with a carbon monoxide sensor and, optionally, one or more heat sensors
This document specifies requirements, test methods and performance criteria for multi-sensor point fire detectors that incorporate a smoke sensor, a carbon monoxide (CO) sensor and, optionally, one or more heat sensors, for use in fire detection and alarm systems installed in buildings (see ISO 7240‑1). For the testing of other types of fire detectors using smoke, CO and, optionally, heat sensors working on different principles, this document can be used only for guidance. This document is not applicable to fire detectors using smoke, CO and, optionally heat sensors, which have special characteristics and which have been developed for specific risks.
Systèmes de détection et d'alarme d'incendie — Partie 27: Détecteurs ponctuels d'incendie utilisant un capteur de fumée en combinaison avec un capteur de monoxyde de carbone (CO) et, optionnellement, un ou plusieurs capteurs de chaleur
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 7240-27
Second edition
2018-05
Fire detection and alarm systems —
Part 27:
Point type fire detectors using a
smoke sensor in combination with
a carbon monoxide sensor and,
optionally, one or more heat sensors
Systèmes de détection et d'alarme d'incendie —
Partie 27: Détecteurs ponctuels d'incendie utilisant un capteur de
fumée en combinaison avec un capteur de monoxyde de carbone (CO)
et, optionnellement, un ou plusieurs capteurs de chaleur
Reference number
ISO 7240-27:2018(E)
©
ISO 2018
---------------------- Page: 1 ----------------------
ISO 7240-27:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 7240-27:2018(E)
Contents Page
Foreword .vii
Introduction .viii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 2
4 General requirements . 2
4.1 Compliance . 2
4.2 Response threshold value of detectors using scattered or transmitted light . 2
4.3 Individual alarm indication . 2
4.4 Connection of ancillary devices . 3
4.5 Monitoring of detachable detectors . 3
4.6 Manufacturer's adjustments . 3
4.7 On-site adjustment of response behaviour . 3
4.8 Protection against the ingress of foreign bodies . 3
4.9 Rate-sensitive CO response behaviour . 3
4.10 Smoke response to slowly developing fires . 4
4.11 Requirements for software controlled detectors . 4
4.11.1 General. 4
4.11.2 Software design. 4
4.11.3 Storage of programs and data . 4
5 Tests . 5
5.1 General . 5
5.1.1 Atmospheric conditions for tests. 5
5.1.2 Operating conditions for tests . 5
5.1.3 Mounting arrangements . 5
5.1.4 Tolerances . 5
5.1.5 Measurement of smoke response threshold value . 5
5.1.6 Measurement of CO response threshold value . 6
5.1.7 Measurement of heat sensor response value . 6
5.1.8 Provision for tests . 7
5.1.9 Test schedule . 8
5.1.10 Test report . 8
5.2 Repeatability of smoke response . 8
5.2.1 Object of the test . 8
5.2.2 Test procedure . 8
5.2.3 Requirements . 8
5.3 Repeatability of CO response . 8
5.3.1 Object of the test . 8
5.3.2 Test procedure . 8
5.3.3 Requirements .10
5.4 Directional dependence of smoke response .10
5.4.1 Object of the test .10
5.4.2 Test procedure .10
5.4.3 Requirements .10
5.5 Directional dependence of CO response .10
5.5.1 Object of the test .10
5.5.2 Test procedure .10
5.5.3 Requirements .10
5.6 Directional dependence of heat response (optional function) .11
5.6.1 Object of the test .11
5.6.2 Test procedure .11
5.6.3 Requirements .11
© ISO 2018 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 7240-27:2018(E)
5.7 Lower limit of heat response (optional function).11
5.7.1 Object of the test .11
5.7.2 Test procedure .11
5.7.3 Requirements .11
5.8 Reproducibility of smoke response .12
5.8.1 Object of the test .12
5.8.2 Test procedure .12
5.8.3 Requirements .12
5.9 Reproducibility of CO response .12
5.9.1 Object of the test .12
5.9.2 Test procedure .12
5.9.3 Requirements .12
5.10 Reproducibility of heat response (optional function).12
5.10.1 Object of the test .12
5.10.2 Test procedure .13
5.10.3 Requirements .13
5.11 Exposure to chemical agents at environmental concentrations .13
5.11.1 Object of the test .13
5.11.2 Test procedure .13
5.11.3 Requirements .13
5.12 Long-term stability of CO response.14
5.12.1 Object of the test .14
5.12.2 Test procedure .14
5.12.3 Requirements .14
5.13 Saturation .14
5.13.1 Object of the test .14
5.13.2 Test procedure .14
5.13.3 Requirements .15
5.14 Variation in supply parameters .15
5.14.1 Object of the test .15
5.14.2 Test procedure .16
5.14.3 Requirements .16
5.15 Air movement.16
5.15.1 Object of the test .16
5.15.2 Test procedure .16
5.15.3 Requirements .17
5.16 Dazzling .17
5.16.1 Object of the test .17
5.16.2 Test procedure .17
5.16.3 Requirements .18
5.17 Dry heat (operational) .18
5.17.1 Object of the test .18
5.17.2 Test procedure .18
5.17.3 Requirements .19
5.18 Dry heat (endurance) .19
5.18.1 Object of the test .19
5.18.2 Test procedure .19
5.18.3 Requirements .19
5.19 Cold (operational), smoke .20
5.19.1 Object of the test .20
5.19.2 Test procedure .20
5.19.3 Requirements .20
5.20 Cold (operational), CO .20
5.20.1 Object of the test .20
5.20.2 Test procedure .21
5.20.3 Requirements .21
5.21 Damp heat, cyclic (operational) .21
5.21.1 Object of the test .21
iv © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 7240-27:2018(E)
5.21.2 Test procedure .21
5.22 Damp heat, steady-state (operational).22
5.22.1 Object of the test .22
5.22.2 Test procedure .22
5.22.3 Requirements .23
5.23 Damp heat, steady-state (endurance) .23
5.23.1 Object of the test .23
5.23.2 Test procedure .23
5.23.3 Requirements .24
5.24 Low humidity, steady-state (endurance) .24
5.24.1 Object of the test .24
5.24.2 Test procedure .24
5.24.3 Requirements .25
5.25 Sulfur dioxide SO corrosion (endurance) .25
2
5.25.1 Object of the test .25
5.25.2 Test procedure .25
5.25.3 Requirements .26
5.26 Shock (operational) .26
5.26.1 Object of the test .26
5.26.2 Test procedure .26
5.26.3 Requirements .27
5.27 Impact (operational) .27
5.27.1 Object of the test .27
5.27.2 Requirements .28
5.28 Vibration, sinusoidal (operational) .28
5.28.1 Object of the test .28
5.28.2 Test procedure .28
5.28.3 Requirements .29
5.29 Vibration, sinusoidal (endurance) .29
5.29.1 Object of the test .29
5.29.2 Test procedure .29
5.29.3 Requirements .30
5.30 Electromagnetic compatibility (EMC) immunity tests (operational) .30
5.30.1 Object of the test .30
5.30.2 Requirements .31
5.31 Fire sensitivity .31
5.31.1 Object of the test .31
5.31.2 Test procedure .31
5.31.3 Requirements .32
6 Test report .32
7 Marking .33
8 Data .33
8.1 Hardware documentation .33
8.2 Software documentation .34
Annex A (normative) Gas test chamber for CO response threshold value
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.