SIST EN 54-26:2015
(Main)Fire detection and fire alarm systems - Part 26: Carbon monoxide detectors - Point detectors
Fire detection and fire alarm systems - Part 26: Carbon monoxide detectors - Point detectors
This European Standard specifies requirements, test methods and performance criteria for point detectors using carbon monoxide sensing for use in fire detection and fire alarm systems in and around buildings (see EN 54 1:2011).
This European Standard provides for the assessment and verification of consistency of performance (AVCP) of carbon monoxide point detectors to this EN.
This European Standard does not cover fire detectors incorporating at least one CO sensing element in combination with other elements sensing different fire phenomena.
CO detectors having special characteristics suitable for the detection of specific fire risks are not covered by this European Standard. The performance requirements for any additional functions are beyond the scope of this European Standard (e.g. additional features or enhanced functionality for which this standard does not define a test or assessment method).
Brandmeldeanlagen - Teil 26: Kohlenmonoxidmelder - Punktfoermige Melder
Diese Europäische Norm legt Anforderungen, Prüfverfahren und Leistungsmerkmale für punktförmige Melder fest, die Kohlenmonoxid erkennen und die in Brandmelde- und Feueralarmanlagen in und um Gebäude eingesetzt werden (siehe EN 54 1:2011).
Diese Europäische Norm sieht die Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP, en: assessment and verification of consistency of performance ) von punktförmigen Kohlenmonoxidmeldern nach dieser EN vor.
Nicht Gegenstand dieser Europäischen Norm sind Brandmelder, die neben mindestens einem CO-Sensor in Kombination andere Sensoren zum Erkennen unterschiedlicher Brandkenngrößen enthalten.
CO-Brandmelder mit speziellen Merkmalen, die zur Erkennung besonderer Brandgefahren geeignet sind, sind nicht Gegenstand dieser Europäischen Norm. Die Leistungsanforderungen an zusätzliche Funktionen liegen nicht im Anwendungsbereich dieser Europäischen Norm (z. B. zusätzliche Merkmale oder erweiterter Funktionsumfang, für den die vorliegende Norm keine Prüf- oder Bewertungsverfahren festlegt).
Système de détection et d'alarme incendie - Partie 26: Détecteurs de monoxide de carbone - Détecteurs ponctuels
La présente Norme européenne spécifie les exigences, les méthodes d'essais et les critères de performance des détecteurs ponctuels fonctionnant suivant le principe de la détection de monoxyde de carbone, utilisés dans les systèmes de détection et d'alarme incendie installés dans et autour des bâtiments (voir l'EN 54 1:2011).
La présente Norme européenne prévoit l'évaluation et la vérification de la constance des performances (EVCP) des détecteurs ponctuels de monoxyde de carbone par rapport à la présente EN.
La présente Norme européenne ne prend pas en compte les détecteurs d'incendie qui combinent au moins un élément de détection de CO avec d'autres éléments de détection de différents phénomènes d'incendie.
Les détecteurs de CO possédant des caractéristiques particulières adaptées à la détection des risques d'incendie spécifiques ne sont pas pris en compte par la présente Norme européenne. Les exigences de performance relatives à toute autre fonction supplémentaire ne relèvent pas du domaine d'application de la présente Norme européenne (par exemple, caractéristiques supplémentaires ou fonctionnalité améliorée pour lesquelles la présente norme ne définit pas de méthode d'essai ou d'évaluation).
Sistemi za odkrivanje in javljanje požara ter alarmiranje - 26. del: Javljalniki ogljikovega monoksida - Točkovni javljalniki
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2015
6LVWHPL]DRGNULYDQMHLQMDYOMDQMHSRåDUDWHUDODUPLUDQMHGHO -DYOMDOQLNL
RJOMLNRYHJDPRQRNVLGD7RþNRYQLMDYOMDOQLNL
Fire detection and fire alarm systems - Part 26: Carbon monoxide detectors - Point
detectors
Brandmeldeanlagen - Teil 26: Kohlenmonoxidmelder - Punktfoermige Melder
Système de détection et d'alarme incendie - Partie 26: Détecteurs de monoxide de
carbone - Détecteurs ponctuels
Ta slovenski standard je istoveten z: EN 54-26:2015
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 54-26
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 13.220.20
English Version
Fire detection and fire alarm systems - Part 26: Carbon
monoxide detectors - Point detectors
Système de détection et d'alarme incendie - Partie 26: Brandmeldeanlagen - Teil 26: Kohlenmonoxidmelder -
Détecteurs de monoxide de carbone - Détecteurs ponctuels Punktfoermige Melder
This European Standard was approved by CEN on 25 January 2015.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 54-26:2015 E
worldwide for CEN national Members.
Contents Page
Foreword .5
Introduction .7
1 Scope .8
2 Normative references .8
3 Terms, definitions and abbreviations .9
3.1 Terms and definitions .9
3.2 Abbreviations .9
4 Requirements .9
4.1 General .9
4.2 Nominal activation conditions/sensitivity .9
4.2.1 Individual alarm indication .9
4.2.2 Rate sensitive CO response .9
4.2.3 Response to slowly developing fires.9
4.2.4 Repeatability . 10
4.2.5 Directional dependence . 10
4.2.6 Reproducibility . 10
4.2.7 Air movement . 10
4.3 Operational reliability . 10
4.3.1 Connection of ancillary devices . 10
4.3.2 Monitoring of detachable detectors . 10
4.3.3 Manufacturer's adjustments . 10
4.3.4 On-site adjustment of behaviour . 10
4.3.5 Software controlled detectors . 11
4.3.6 Long term stability . 12
4.4 Tolerance to supply voltage — Variation in supply parameters . 12
4.5 Performance parameters under fire conditions — Fire sensitivity . 12
4.6 Durability of nominal activation conditions/sensitivity . 12
4.6.1 Temperature resistance . 12
4.6.2 Humidity resistance . 12
4.6.3 Corrosion resistance — SO corrosion (endurance) . 13
4.6.4 Shock and vibration resistance . 13
4.6.5 Electrical stability — EMC, immunity (operational) . 13
4.6.6 Resistance to chemical agents . 13
5 Test and assessment methods . 14
5.1 General . 14
5.1.1 Atmospheric conditions for tests . 14
5.1.2 Operating conditions for tests . 14
5.1.3 Mounting arrangements . 14
5.1.4 Tolerances . 14
5.1.5 Measurement of CO response value. 14
5.1.6 Provision for tests . 15
5.1.7 Test schedule . 15
5.2 Nominal activation conditions/sensitivity . 16
5.2.1 Individual alarm indication . 16
5.2.2 Rate sensitive CO response . 17
5.2.3 Response to slowly developing fires. 17
5.2.4 Repeatability . 17
5.2.5 Directional dependence . 18
5.2.6 Reproducibility . 18
5.2.7 Air movement . 19
5.3 Operational reliability . 19
5.3.1 Connection of ancillary devices . 19
5.3.2 Monitoring of detachable detectors . 19
5.3.3 Manufacturer's adjustments . 19
5.3.4 On-site adjustment of behaviour . 19
5.3.5 Software controlled detectors . 19
5.3.6 Long term stability . 19
5.4 Tolerance to supply voltage . 20
5.4.1 Variation in supply parameters . 20
5.5 Performance parameters under fire conditions . 21
5.5.1 Fire sensitivity . 21
5.6 Durability of nominal activation conditions/sensitivity . 23
5.6.1 Temperature resistance . 23
5.6.2 Humidity resistance . 25
5.6.3 Corrosion resistance — SO corrosion (endurance) . 29
5.6.4 Shock and vibration resistance . 30
5.6.5 Electrical stability . 34
5.6.6 Resistance to chemical agents . 35
6 Assessment and verification of constancy of performance (AVCP) . 37
6.1 General . 37
6.2 Type testing . 37
6.2.1 General . 37
6.2.2 Test samples, testing and compliance criteria . 38
6.2.3 Test reports . 39
6.3 Factory production control (FPC) . 39
6.3.1 General . 39
6.3.2 Requirements . 40
6.3.3 Product specific requirements . 42
6.3.4 Initial inspection of factory and FPC . 42
6.3.5 Continuous surveillance of FPC . 43
6.3.6 Procedure for modifications. 43
6.3.7 One-off products, pre-production products, (e.g. prototypes) and products produced in
very low quantities . 43
7 Classification . 44
8 Marking, labelling and packaging . 44
Annex A (normative) Gas test chamber for response value and cross-sensitivity . 46
A.1 General . 46
A.2 Gas test chamber specification . 46
Annex B (normative) CO and smoke measuring instruments . 48
B.1 General . 48
B.2 CO measuring instrument . 48
B.3 Obscuration meter . 48
B.4 Measuring ionization chamber (MIC) . 48
Annex C (normative) Fire test room . 49
C.1 General . 49
C.2 Fire test room specification. 49
Annex D (informative) Establishing exposure levels of chemical agents . 52
D.1 General . 52
D.2 Establishing concentration of chemical agents for test gases 1 to 9 . 52
D.3 Verification of test chamber leakage . 52
D.4 Establishing concentration of ozone . 52
Annex E (normative) Smouldering (pyrolysis) wood fire (TF2) . 54
E.1 General . 54
E.2 Fuel . 54
E.3 Hotplate . 54
E.4 Arrangement . 54
E.5 Heating rate . 54
E.6 End of test condition . 54
E.7 Test validity criteria . 54
Annex F (normative) Glowing smouldering cotton fire (TF3) . 59
F.1 General . 59
F.2 Fuel . 59
F.3 Arrangement . 59
F.4 Ignition . 60
F.5 End of test condition . 60
F.6 Test validity criteria . 61
Annex G (informative) Information concerning the construction of the gas test chamber . 64
G.1 General . 64
G.2 Construction of the gas test chamber . 64
Annex H (informative) Apparatus for impact test . 66
H.1 General . 66
H.2 Apparatus construction . 66
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Regulation . 69
Bibliography . 79
Foreword
This document (EN 54-26:2015) has been prepared by Technical Committee CEN/TC 72 “Fire detection and
fire alarm systems”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2015, and conflicting national standards shall be withdrawn at
the latest by April 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports the basic requirements of Regulation (EU) 305/2011.
For relationship with EU Regulations, see informative Annex ZA which is an integral part of this document.
EN 54, Fire detection and fire alarm systems, consists of the following parts:
— Part 1: Introduction;
— Part 2: Control and indicating equipment;
— Part 3: Fire alarm devices — Sounders;
— Part 4: Power supply equipment;
— Part 5: Heat detectors — Point detectors;
— Part 7: Smoke detectors — Point detectors using scattered light, transmitted light or ionization;
— Part 10: Flame detectors — Point detectors;
— Part 11: Manual call points;
— Part 12: Smoke detectors — Line detectors using an optical light beam;
— Part 13: Compatibility assessment of system components;
— Part 14: Guidelines for planning, design, installation, commissioning, use and maintenance
[CEN Technical Specification];
— Part 16: Voice alarm control and indicating equipment;
— Part 17: Short circuit isolators;
— Part 18: Input/output devices;
— Part 20: Aspirating smoke detectors;
— Part 21: Alarm transmission and fault warning routing equipment;
— Part 22: Resettable line-type heat detectors [currently at acceptance stage];
— Part 23: Fire alarm devices — Visual alarms devices;
— Part 24: Components of voice alarm systems — Loudspeakers;
— Part 25: Components using radio links;
— Part 26: Carbon monoxide detectors — Point detectors [the present document];
— Part 27: Duct smoke detectors;
— Part 28: Non-resettable line type heat detectors [currently at drafting stage];
— Part 29: Multi-sensor fire detectors — Point detectors using a combination of smoke and heat sensors;
— Part 30: Multi-sensor fire detectors — Point detectors using a combination of carbon monoxide and heat
sensors;
— Part 31: Multi-sensor fire detectors — Point detectors using a combination of smoke, carbon monoxide
and optionally heat sensors;
— Part 32: Planning, design, installation, commissioning, use and maintenance of voice alarm systems
[currently at acceptance stage].
NOTE This list includes standards that are in preparation and other standards may be added. For current status of
published standards refer to www.cen.eu.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
Carbon monoxide (CO) is a product of the incomplete combustion of carbon-based materials. CO fire
detectors can react promptly to smouldering fires involving carbonaceous materials because CO does not
depend solely on convection, but also moves by diffusion. CO fire detectors might be better suited to
applications where other fire detection techniques are prone to false alarms, i.e. due to dust, steam and
cooking vapours.
The purpose of this standard is to ensure that carbon monoxide (CO) fire detectors have adequate sensitivity
and reliability for use in fire detection and fire alarm systems for residential commercial and industrial
premises. CO may not be produced in detectable quantities where pyrolysis of material rather than self-
sustained combustion occurs (e.g. overheating cables) or in the early stages of rapidly burning flaming fires
(e.g. liquid fuel fires). It is important that carbon monoxide fire detectors are only used where a risk
assessment indicates that they are appropriate for detecting the types of fires that may occur. CO fire
detectors should not be considered as a direct replacement for smoke detectors. CO fire detectors detect
carbon monoxide gas rather than the smoke particulates detected by optical and ionization smoke detectors.
A number of different methods for sensing CO are suitable. However, most sensors will also be influenced by
other gases and phenomena. Tests have therefore been included in the test schedule to assess cross-
sensitivity to substances normally present in the service environment that may affect the performance of the
detector.
As CO detectors are specifically well suited for the detection of incipient fires rather than flaming fires this
standard only includes tests to verify performance in smouldering fires. For this purpose, test fires TF2 and
TF3 from EN 54-7 have been included in the test schedule. An additional validity criterion has been added to
each of these tests to make them suitable for evaluating CO fire detectors.
1 Scope
This European Standard specifies requirements, test methods and performance criteria for point detectors
using carbon monoxide sensing for use in fire detection and fire alarm systems in and around buildings
(see EN 54-1:2011).
This European Standard provides for the assessment and verification of consistency of performance (AVCP)
of carbon monoxide point detectors to this EN.
This European Standard does not apply to fire detectors incorporating at least one CO sensing element in
combination with other elements sensing different fire phenomena.
CO detectors having special characteristics suitable for the detection of specific fire risks are not covered by
this European Standard. The performance requirements for any additional functions are beyond the scope of
this European Standard (e.g. additional features or enhanced functionality for which this standard does not
define a test or assessment method).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 54-1:2011, Fire detection and fire alarm systems — Part 1: Introduction
1)
EN 54-7:2000 , Fire detection and fire alarm systems — Part 7: Smoke detectors — Point detectors using
scattered light, transmitted light or ionization
EN 50130-4:2011, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard:
Immunity requirements for components of fire, intruder, hold up, CCTV, access control and social alarm
systems
EN 60068-1:2014, Environmental testing — Part 1: General and guidance (IEC 60068-1:2013)
EN 60068-2-1:2007, Environmental testing — Part 2-1: Tests — Test A: Cold (IEC 60068-2-1:2007)
EN 60068-2-2:2007, Environmental testing — Part 2-2: Tests — Test B: Dry heat (IEC 60068-2-2:2007)
EN 60068-2-6:2008, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal) (IEC 60068-2-
6:2007)
EN 60068-2-27:2009, Environmental testing — Part 2-27: Tests — Test Ea and guidance: Shock (IEC 60068-
2-27:2008)
EN 60068-2-30:2005, Environmental testing — Part 2-30: Tests — Test Db: Damp heat, cyclic (12 h + 12 h
cycle) (IEC 60068-2-30:2005)
EN 60068-2-42:2003, Environmental testing — Part 2-42: Tests — Test Kc: Sulphur dioxide test for contacts
and connections (IEC 60068-2-42:2003)
EN 60068-2-78:2013, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state
(IEC 60068-2-78:2012)
1) This document is currently impacted by the stand-alone amendments EN 54-7:2000/A1:2002 and
EN 54-7:2000/A2:2006.
ISO 209:2007, Wrought aluminium and aluminium alloys — Chemical composition and forms of products —
Part 1: Chemical composition
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 54-1:2011 and the following apply.
3.1.1
CO response value
CO concentration in the proximity of the specimen at the moment that it generates an alarm signal, when
tested as described in 5.1.5
Note 1 to entry: The response value may depend on signal processing in the detector and in the control and indicating
equipment.
3.1.2
rate-sensitive
behaviour of a detector that depends on the rate of change of CO concentration
3.2 Abbreviations
EMC Electromagnetic compatibility
4 Requirements
4.1 General
In order to comply with this standard, the detector shall meet the requirements of this clause, which shall be
verified by visual inspection or engineering assessment or shall be tested as described in Clause 5.
4.2 Nominal activation conditions/sensitivity
4.2.1 Individual alarm indication
The detector shall be provided with an integral red visual indicator, by which the individual detector that
released an alarm, can be identified, until the alarm condition is reset. Where other conditions of the detector
can be visually indicated, they shall be clearly distinguishable from the alarm indication, except when the
detector is switched into a service mode. For detachable detectors, the indicator may be integral with the base
or the detector head. The visual indicator shall be visible from a distance of 6 m directly below the detector, in
an ambient light intensity up to 500 lux when assessed as described in 5.2.1.
4.2.2 Rate sensitive CO response
The CO response value of the detector may depend on the rate of change of CO concentration in the vicinity
of the detector. Such behaviour may be incorporated in the detector design to improve the discrimination
between ambient CO levels and those generated by a fire. If such rate sensitive behaviour is included then it
shall not lead to a significant reduction in the detector’s sensitivity to fires, nor to a significant increase in the
probability of false alarm when assessed as specified in 5.2.2.
4.2.3 Response to slowly developing fires
Point carbon monoxide detectors may incorporate provision for “drift compensation”, for example to
compensate for sensor drift due ageing of the CO sensor or the build-up of contaminants in the detector, If
such drift compensation is included, then it shall not lead to a significant change in the detector's sensitivity to
slowly developing fires when assessed as specified in 5.2.3.
4.2.4 Repeatability
The detector shall have stable behaviour with respect to its sensitivity after a number of alarm conditions and
shall meet the requirements specified in 5.2.4.
4.2.5 Directional dependence
The sensitivity of the detector shall not be unduly dependent on the direction of airflow around it and shall
meet the requirements specified in 5.2.5.
4.2.6 Reproducibility
The sensitivity of the detector shall not vary unduly from specimen to specimen and shall meet the
requirements specified in 5.2.6.
4.2.7 Air movement
The sensitivity of the detector shall not be unduly affected by the rate of the airflow and shall meet the
requirements specified in 5.2.7.
4.3 Operational reliability
4.3.1 Connection of ancillary devices
Where the detector provides for connections to ancillary devices (e.g. remote indicators, control relays), open-
or short-circuit failures of these connections shall not prevent the correct operation of the detector.
4.3.2 Monitoring of detachable detectors
For detachable detectors, a means shall be provided for a remote monitoring system (e.g. the control and
indicating equipment) to detect the removal of the head from the base, in order to give a fault signal.
4.3.3 Manufacturer's adjustments
It shall not be possible to change the manufacturer's settings except by special means (e.g. the use of a
special code or tool) or by breaking or removing a seal.
4.3.4 On-site adjustment of behaviour
If there is provision for on-site adjustment of the response behaviour of the detector then:
a) for each setting at which the manufacturer claims compliance with this standard, the detector shall comply
with the requirements of this standard, and access to the adjustment means shall only be possible by the
use of a code or special tool or by removing the detector from its base or mounting;
b) any setting(s) at which the manufacturer does not claim compliance with this standard, shall only be
accessible by the use of a code or special tool, and it shall be clearly marked on the detector or in the
associated data, that if these setting(s) are used, the detector does not comply with the standard.
These adjustments may be carried out at the detector or at the control and indicating equipment.
4.3.5 Software controlled detectors
4.3.5.1 General
For detectors which rely on software control in order to fulfil the requirements of this standard, the
requirements of 4.3.5.2, 4.3.5.3 and 4.3.5.4 shall be met.
4.3.5.2 Software documentation
4.3.5.2.1 Design overview
The manufacturer shall submit documentation which gives an overview of the software design. This
documentation shall be in sufficient detail for the design to be inspected for compliance with this standard and
shall include at least the following:
a) a functional description of the main program flow (e.g. as a flow diagram or structogram) including:
1) a brief description of the modules and the functions that they perform;
2) the way in which the modules interact;
3) the overall hierarchy of the program;
4) the way in which the software interacts with the hardware of the detector;
5) the way in which the modules are called, including any interrupt processing;
b) a description of which areas of memory are used for the various purposes (e.g. the program, site specific
data and running data);
c) a designation, by which the software and its version can be uniquely identified.
4.3.5.2.2 Design detail
The manufacturer shall have available detailed design documentation, which only needs to be provided if
required by the testing authority. It shall comprise at least the following:
a) an overview of the whole system configuration, including all software and hardware components;
b) a description of each module of the program, containing at least:
1) the name of the module;
2) a description of the tasks performed;
3) a description of the interfaces, including the type of data transfer, the valid data range and the
checking for valid data;
c) full source code listings, as hard copy or in machine-readable form (e.g. ASCII-code), including all global
and local variables, constants and labels used, and sufficient comment for the program flow to be
recognized;
d) details of any software tools used in the design and implementation phase (e.g. CASE-tools, compilers).
4.3.5.3 Software design
In order to ensure the reliability of the detector, the following requirements for software design shall apply:
a) the software shall have a modular structure;
b) the design of the interfaces for manually and automatically generated data shall not permit invalid data to
cause error in the program operation;
c) the software shall be designed to avoid the occurrence of deadlock of the program flow.
4.3.5.4 The storage of programs and data
The program necessary to comply with this standard and any pre-set data, such as manufacturer's settings,
shall be held in non-volatile memory. Writing to areas of memory containing this program and data shall only
be possible by the use of some special tool or code and shall not be possible during normal operation of the
detector.
Site-specific data shall be held in memory which will retain data for at least two weeks without external power
to the detector, unless provision is made for the automatic renewal of such data, following loss of power,
within 1 h of power being restored.
4.3.6 Long term stability
The detectors shall be stable over long periods of time as specified in 5.3.6.
4.4 Tolerance to supply voltage — Variation in supply parameters
Within the specified range(s) of the supply parameters, the sensitivity of the detector shall not be unduly
dependent on these parameters (e.g. voltage) and shall meet the requirements specified in 5.4.1.
4.5 Performance parameters under fire conditions — Fire sensitivity
The detector shall have adequate sensitivity to incipient type fires that may occur in buildings as specified in
5.5.1.
4.6 Durability of nominal activation conditions/sensitivity
4.6.1 Temperature resistance
4.6.1.1 Dry heat (operational)
The detector shall function correctly at high ambient temperatures as specified in 5.6.1.1.
4.6.1.2 Dry heat (endurance)
The detector shall be capable of withstanding long term exposure to high temperature as specified in 5.6.1.2.
4.6.1.3 Cold (operational)
The detector shall function correctly at low ambient temperatures, as specified in 5.6.1.3.
4.6.2 Humidity resistance
4.6.2.1 Damp heat, cyclic (operational)
The detector shall function correctly at a high level of relative humidity with short period of condensation, as
specified in 5.6.2.1.
4.6.2.2 Damp heat steady-state (operational)
The detector shall function correctly at high relative humidity (without condensation) as specified in 5.6.2.2.
4.6.2.3 Damp heat steady-state (endurance)
The detector shall be capable of withstanding long term exposure to a high level of continuous humidity as
specified in 5.6.2.3.
4.6.2.4 Low humidity, steady-state (operational)
The detector shall function correctly at low relative humidity as specified in 5.6.2.4.
4.6.3 Corrosion resistance — SO corrosion (endurance)
The detector shall be capable of withstanding the corrosive effects of sulphur dioxide as an atmospheric
pollutant as specified in 5.6.3.
4.6.4 Shock and vibration resistance
4.6.4.1 Shock (operational)
The detector shall function correctly when submitted to mechanical shocks which are likely to occur in the
service environment as specified in 5.6.4.1.
4.6.4.2 Impact (operational)
The detector shall function correctly when submitted to mechanical impacts which it may sustain in the normal
service environment as specified in 5.6.4.2.
4.6.4.3 Vibration, sinusoidal (operational)
The detector shall function correctly when submitted to vibration at levels appropriate to its normal service
environment as specified in 5.6.4.3.
4.6.4.4 Vibration, sinusoidal (endurance)
The detector shall be capable of withstanding long exposure to vibration at levels appropriate to the service
environment as specified in 5.6.4.4.
4.6.5 Electrical stability — EMC, immunity (operational)
The detector shall operate correctly when submitted to electromagnetic interference as specified in 5.6.5.1.
4.6.6 Resistance to chemical agents
4.6.6.1 Exposure to high level of carbon monoxide
The detector shall be capable to withstand exposure to high levels of CO which may be encountered during a
fire condition as specified in 5.6.6.1.
4.6.6.2 Exposure to chemical agents at environmental concentrations
The detector shall be capable of withstanding the effects of exposure to atmospheric pollutants or chemicals
which may be encountered in the service environment as specified in 5.6.6.2.
5 Test and assessment methods
5.1 General
5.1.1 Atmospheric conditions for tests
Unless otherwise stated in a test procedure, the testing shall be carried out after the test specimen has been
allowed to stabilize in the standard atmospheric conditions for testing as described in EN 60068-1 as follows:
— temperature: (15 to 35) °C;
— relative humidity: (25 to 75) %;
— air pressure: (86 to 106) kPa.
If variations in these parameters have a significant effect on a measurement, then such variations should be
kept to a minimum during a series of measurements carried out as part of one test on one specimen.
The ambient concentration of CO shall not exceed 3 µl/l.
5.1.2 Operating conditions for tests
If a test method requires a specimen to be operational, then the specimen shall be connected to suitable
supply and monitoring equipment with characteristics as required by the manufacturer's data. Unless
otherwise specified in the test method, the supply parameters applied to the specimen shall be set within the
manufacturer's specified range(s) and shall remain substantially constant throughout the tests. The value
chosen for each parameter shall normally be the nominal value, or the mean of the specified range. If a test
procedure requires a specimen to be monitored to detect any alarm or fault signals, then connections shall be
made to any necessary ancillary devices (e.g. through wiring to an end-of-line device for conventional
detectors) to allow a fault signal to be recognized.
The details of the supply and monitoring equipment and the alarm criteria used should be given in the test
report.
5.1.3 Mounting arrangements
The specimen shall be mounted by its normal means of attachment and in its normal orientation in
accordance with the manufacturer's instructions. If these instructions describe more than one method of
mounting, or more than one acceptable orientation, then the method considered to be most unfavourable shall
be chosen for each test.
5.1.4 Tolerances
Unless otherwise stated, the tolerances for the environmental test parameters shall be as given in the basic
reference standards for the test (e.g. the relevant part of EN 60068).
If a requirement or test procedure does not specify a tolerance or deviation limits, then deviation limits
of ± 5 % shall be applied.
5.1.5 Measurement of CO response value
The specimen, for which the CO response value shall be measured, shall be installed in the gas tes
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