BS ISO 7240-8:2007 - Fire detection and alarm systems. Carbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor – BSI British Standards

BS ISO 7240-8:2007

Fire detection and alarm systems. Carbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor

Status : Revised, Superseded, Withdrawn   Published : November 2007 Replaced By : BS ISO 7240-8:2014

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A fire detection and fire alarm system is required to function satisfactorily not only in the event of a fire, but also during and after exposure to conditions such as corrosion, vibration, direct impact, indirect shock and electromagnetic interference.

Carbon monoxide (CO) fire detectors can react promptly to slow, smouldering fires involving carbonaceous materials. Although in the majority of fires the products of combustion are transported by convection, the gaseous nature of CO means that it also diffuses and, particularly in low energy fires, it can move ahead of the smoke plume and thus provide earlier detection.
Conversely, CO fire detectors alone might not react quickly to flaming fires and the addition of a heat sensor provides better detection to a broader spectrum of fires.

BS ISO 7240-8:2007 specifies requirements, test methods and performance criteria for point multi-sensor fire detectors that incorporate an electrochemical cell for sensing carbon monoxide (CO) in combination with 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 CO multi-sensor fire detectors, or CO and heat multi-sensor fire detectors working on different principles, this Standard can be used for guidance. CO and heat multi-sensor fire detectors with special characteristics and developed for specific risks are not covered by this Standard.




Standard NumberBS ISO 7240-8:2007
TitleFire detection and alarm systems. Carbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor
StatusRevised, Superseded, Withdrawn
Publication Date30 November 2007
Withdrawn Date31 January 2015
Normative References(Required to achieve compliance to this standard)ISO 7240-5:2003, ISO 7240-6, ISO 7240-1, ISO 209-1, IEC 60068-2-1, IEC 60068-1, IEC 60068-2-27, IEC 60068-2-78, IEC 60068-2-6, EN 50130-4, IEC 60068-2-30, IEC 60068-2-42, IEC 60068-2-2:1974
Informative References(Provided for Information)No other standards are informatively referenced
Replaced ByBS ISO 7240-8:2014
International RelationshipsISO 7240-8:2007
Draft Superseded By05/30141222 DC
DescriptorsElectrochemical devices, Fire detectors, Gas detectors, Performance testing, Alarm systems, Safety measures, Performance, Carbon monoxide, Fire alarms, Fire safety in buildings, Warning devices, Fire safety
ICS13.220.20
Title in FrenchSystèmes de détection et d'alarme d'incendie. Détecteurs de monoxyde de carbone pour la détection d'incendie utilisant une cellule électrochimique en combinaison avec un capteur de chaleur
Title in GermanBrandmeldeanlagen. CO-Melder, die eine elektrochemische Zelle in Kombination mit einem Wärmesensor verwenden
CommitteeFSH/12/2
ISBN978 0 580 60780 6
PublisherBSI
FormatA4
DeliveryNo
Pages62
File Size839 KB
Price£254.00


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