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1、 Reference number ISO 7240-27:2009(E) ISO 2009 INTERNATIONAL STANDARD ISO 7240-27 First edition 2009-04-01 Fire detection and alarm systems Part 27: Point-type fire detectors using a scattered-light, transmitted-light or ionization smoke sensor, an electrochemical-cell carbon-monoxide sensor and a h
2、eat sensor Systmes de dtection et dalarme dincendie Partie 27: Dtecteurs dincendie ponctuels utilisant un dtecteur de fume bas sur le principe de la diffusion de la lumire, de la transmission de la lumire ou de lionisation, un dtecteur de monoxyde de carbone cellule lectrochimique et un dtecteur de
3、chaleur Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7240-27:2009(E) PDF disclaimer This PDF file may
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5、nsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creatio
6、n parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009
7、All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the countr
8、y of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reserved Copyright International Organization for Standardization Provided by IHS under lice
9、nse with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7240-27:2009(E) ISO 2009 All rights reserved iii Contents Page Foreword. v Introduction vii 1 Scope . 1 2 Normative references. 1 3 Definit
10、ions . 2 4 General requirements. 2 4.1 Compliance 2 4.2 Individual alarm indication 2 4.3 Connection of ancillary devices 3 4.4 Monitoring of detachable detectors 3 4.5 Manufacturers adjustments 3 4.6 On-site adjustment of response behaviour . 3 4.7 Protection against the ingress of foreign bodies 3
11、 4.8 Rate-sensitive CO response behaviour 3 4.9 Smoke response to slowly developing fires 4 4.10 Marking 4 4.11 Data 5 4.12 Requirements for software controlled detectors 5 5 Tests. 6 5.1 General. 6 5.2 Repeatability of smoke response 11 5.3 Repeatability of CO response 11 5.4 Directional dependence
12、 of smoke response . 11 5.5 Directional dependence of CO response . 12 5.6 Directional dependence of heat response (optional function). 12 5.7 Lower limit of heat response (optional function) 13 5.8 Reproducibility of smoke response 13 5.9 Reproducibility of CO response 14 5.10 Reproducibility of he
13、at response (optional function). 14 5.11 Exposure to chemical agents at environmental concentrations. 15 5.12 Long-term stability of CO response 16 5.13 Saturation 16 5.14 Exposure to chemical agents associated with a fire 17 5.15 Variation in supply parameters . 18 5.16 Air movement 19 5.17 Dazzlin
14、g . 20 5.18 Dry heat (operational). 20 5.19 Cold (operational), smoke 21 5.20 Cold (operational), CO 23 5.21 Damp heat cyclic (operational) 24 5.22 Damp heat, steady state (endurance). 25 5.23 Low humidity, steady state (endurance) 26 5.24 Sulfur dioxide SO2 corrosion (endurance). 27 5.25 Shock (ope
15、rational) 28 5.26 Impact (operational) 29 5.27 Vibration, sinusoidal (operational) 30 5.28 Vibration, sinusoidal (endurance). 32 5.29 Electromagnetic compatibility (EMC) immunity tests (operational) 33 5.30 Fire sensitivity. 34 6 Test report . 36 Copyright International Organization for Standardizat
16、ion Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7240-27:2009(E) iv ISO 2009 All rights reserved Annex A (normative) Gas test chamber for response threshold v
17、alue and cross sensitivity measurements.37 Annex B (informative) Construction of the heat tunnel38 Annex C (normative) Apparatus for impact test41 Annex D (normative) Fire test room .43 Annex E (normative) Smouldering (pyrolysis) wood fire (TF2).45 Annex F (normative) Glowing, smouldering cotton fir
18、e (TF3) .48 Annex G (normative) Open plastics (polyurethane) fire (TF4).51 Annex H (normative) Liquid (heptane) fire (TF5).53 Annex I (normative) Low-temperature, black-smoke (decalin) liquid fire (TF8).55 Annex J (informative) Information concerning the construction of the gas test chamber.57 Copyr
19、ight International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7240-27:2009(E) ISO 2009 All rights reserved v Foreword ISO (
20、the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical commi
21、ttee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotec
22、hnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the membe
23、r bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifyin
24、g any or all such patent rights. ISO 7240-27 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting, Subcommittee SC 3, Fire detection and alarm systems. ISO 7240 consists of the following parts, under the general title Fire detection and alarm systems: Part 1
25、: General and definitions Part 2: Control and indicating equipment Part 4: Power supply equipment Part 5: Point-type heat detectors Part 6: Carbon monoxide fire detectors using electro-chemical cells Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization Part 8: Ca
26、rbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor Part 9: Test fires for fire detectors (Technical Specification) Part 10: Point-type flame detectors Part 11: Manual call points Part 12: Line type smoke detectors using a transmitted optical beam Part 13: C
27、ompatibility assessment of system components Part 14: Guidelines for drafting codes of practice for design, installation and use of fire detection and fire alarm systems in and around buildings (Technical Report) Part 15: Point type fire detectors using scattered light, transmitted light or ionizati
28、on sensors in combination with a heat sensor Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7240-27:200
29、9(E) vi ISO 2009 All rights reserved Part 16: Sound system control and indicating equipment Part 19: Design, installation, commissioning and service of sound systems for emergency purposes Part 21: Routing equipment Part 22: Smoke-detection equipment for ducts Part 27: Point-type fire detectors usin
30、g a scattered-light, transmitted-light or ionization smoke sensor, an electrochemical-cell carbon-monoxide sensor and a heat sensor Part 28: Fire protection control equipment The following parts are under development: Part 17, dealing with short-circuit isolators; Part 18, dealing with input/output
31、devices; Part 20, dealing with aspirating smoke detectors; Part 24, dealing with sound-system loudspeakers; Part 25, dealing with components using radio links; Part 26, dealing with oil mist detectors. Copyright International Organization for Standardization Provided by IHS under license with ISO Li
32、censee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7240-27:2009(E) ISO 2009 All rights reserved vii Introduction A fire detection and fire alarm system is required to function satisfactorily not only in th
33、e event of fire, but also during and after exposure to conditions it can likely meet in practice, such as corrosion, vibration, direct impact, indirect shock and electromagnetic interference. Some tests specified are intended to assess the performance of fire detectors under such conditions. The per
34、formance of fire detectors is assessed from results obtained in specific tests; this part of ISO 7240 is not intended to place any other restrictions on the design and construction of such detectors. Smoke detectors using ionization or optical sensors, and complying with ISO 7240-7, are well establi
35、shed for the protection of life and property. Even so, they can respond to stimuli other than smoke and in some circumstances can be prone to false alarms. False alarm rates are usually minimized by careful application, giving some limitations in use, and occasionally with a reduction in protection
36、provided. It is generally accepted that fire detectors using carbon monoxide (CO) sensors alone, while suitable for the detection of smouldering fires involving carbonaceous fuels, can be relatively insensitive to free-burning fires supported by a plentiful supply of oxygen. This limitation can be l
37、argely overcome by the inclusion of a heat sensor whose output is combined in some way with that of the CO sensor. Performance requirements for CO fire detectors and for CO and heat detectors can be found in ISO 7240-6 and ISO 7240-8, respectively. Although the CO-detector heat-detector combination
38、is capable of responding to free-burning fires, it can still be relatively insensitive to low-temperature fires that produce large amounts of visible smoke but low concentrations of CO and little heat. This limitation prevents the CO and heat detector from being a true replacement for a smoke detect
39、or in life-safety applications. Many false-alarm sources that affect smoke detectors do not produce CO. It is possible, therefore, that by adding a CO sensor to a smoke detector, and combining its output in some way with that of the smoke sensor, the incidence of false alarms can be reduced. This re
40、duction can be achieved while simultaneously providing the ability to respond to a broader range of fire types than is possible with either a smoke or CO detector alone. It can be possible to improve the performance even further by adding a heat sensor to assist in the response to clean-burning, hig
41、h-energy fires. This improvement is seen as secondary to the overall performance and for this reason the heat sensor is treated as optional for compliance with this part of ISO 7240. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitorin
42、g/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 02:11:41 MDTNo repro
43、duction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 7240-27:2009(E) ISO 2009 All rights reserved 1 Fire detection and alarm systems Part 27: Point-type fire detectors using a scattered-light, transmitted- light or ionization smoke sensor, an electrochemical-cell
44、 carbon-monoxide sensor and a heat sensor 1 Scope This part of ISO 7240 specifies requirements, test methods and performance criteria for multi-sensor point-type fire detectors that incorporate an optical or ionization smoke sensor, an electro-chemical cell for sensing carbon monoxide (CO) and, opti
45、onally, 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 part of ISO 7240 can be used only for guidance.
46、Fire detectors using smoke, CO and, optionally, heat sensors which have special characteristics and which have been developed for specific risks are not covered by this part of ISO 7240. 2 Normative references The following referenced documents are indispensable for the application of this document.
47、 For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 209-1, Wrought aluminium and aluminium alloys Chemical composition and forms of products Part 1: Chemical composition ISO 7240-1, Fire
48、detection and alarm systems Part 1: General and definitions ISO 7240-5:2003, Fire detection and alarm systems Part 5: Point-type heat detectors ISO 7240-6, Fire detection and alarm systems Part 6: Carbon monoxide fire detectors using electro-chemical cells ISO 7240-7:2003, Fire detection and alarm systems Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization ISO 7240-8, Fire detection and alarm s