ISO 7240-27:2018
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.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 General requirements
4.1 Compliance
4.2 Response threshold value of detectors using scattered or transmitted light
4.3 Individual alarm indication
4.4 Connection of ancillary devices
4.5 Monitoring of detachable detectors
4.6 Manufacturer's adjustments
4.7 On-site adjustment of response behaviour
4.8 Protection against the ingress of foreign bodies
4.9 Rate-sensitive CO response behaviour
4.10 Smoke response to slowly developing fires
4.11 Requirements for software controlled detectors
4.11.1 General
4.11.2 Software design
4.11.3 Storage of programs and data
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
5.1.2 Operating conditions for tests
5.1.3 Mounting arrangements
5.1.4 Tolerances
5.1.5 Measurement of smoke response threshold value
5.1.6 Measurement of CO response threshold value
5.1.7 Measurement of heat sensor response value
5.1.8 Provision for tests
5.1.9 Test schedule
5.1.10 Test report
5.2 Repeatability of smoke response
5.2.1 Object of the test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Repeatability of CO response
5.3.1 Object of the test
5.3.2 Test procedure
5.3.3 Requirements
5.4 Directional dependence of smoke response
5.4.1 Object of the test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Directional dependence of CO response
5.5.1 Object of the test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Directional dependence of heat response (optional function)
5.6.1 Object of the test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Lower limit of heat response (optional function)
5.7.1 Object of the test
5.7.2 Test procedure
5.7.3 Requirements
5.8 Reproducibility of smoke response
5.8.1 Object of the test
5.8.2 Test procedure
5.8.3 Requirements
5.9 Reproducibility of CO response
5.9.1 Object of the test
5.9.2 Test procedure
5.9.3 Requirements
5.10 Reproducibility of heat response (optional function)
5.10.1 Object of the test
5.10.2 Test procedure
5.10.3 Requirements
5.11 Exposure to chemical agents at environmental concentrations
5.11.1 Object of the test
5.11.2 Test procedure
5.11.3 Requirements
5.12 Long-term stability of CO response
5.12.1 Object of the test
5.12.2 Test procedure
5.12.3 Requirements
5.13 Saturation
5.13.1 Object of the test
5.13.2 Test procedure
5.13.3 Requirements
5.14 Variation in supply parameters
5.14.1 Object of the test
5.14.2 Test procedure
5.14.3 Requirements
5.15 Air movement
5.15.1 Object of the test
5.15.2 Test procedure
5.15.3 Requirements
5.16 Dazzling
5.16.1 Object of the test
5.16.2 Test procedure
5.16.3 Requirements
5.17 Dry heat (operational)
5.17.1 Object of the test
5.17.2 Test procedure
5.17.3 Requirements
5.18 Dry heat (endurance)
5.18.1 Object of the test
5.18.2 Test procedure
5.18.3 Requirements
5.19 Cold (operational), smoke
5.19.1 Object of the test
5.19.2 Test procedure
5.19.3 Requirements
5.20 Cold (operational), CO
5.20.1 Object of the test
5.20.2 Test procedure
5.20.3 Requirements
5.21 Damp heat, cyclic (operational)
5.21.1 Object of the test
5.21.2 Test procedure
5.22 Damp heat, steady-state (operational)
5.22.1 Object of the test
5.22.2 Test procedure
5.22.3 Requirements
5.23 Damp heat, steady-state (endurance)
5.23.1 Object of the test
5.23.2 Test procedure
5.23.3 Requirements
5.24 Low humidity, steady-state (endurance)
5.24.1 Object of the test
5.24.2 Test procedure
5.24.3 Requirements
5.25 Sulfur dioxide SO2 corrosion (endurance)
5.25.1 Object of the test
5.25.2 Test procedure
5.25.3 Requirements
5.26 Shock (operational)
5.26.1 Object of the test
5.26.2 Test procedure
5.26.3 Requirements
5.27 Impact (operational)
5.27.1 Object of the test
5.27.2 Requirements
5.28 Vibration, sinusoidal (operational)
5.28.1 Object of the test
5.28.2 Test procedure
5.28.3 Requirements
5.29 Vibration, sinusoidal (endurance)
5.29.1 Object of the test
5.29.2 Test procedure
5.29.3 Requirements
5.30 Electromagnetic compatibility (EMC) immunity tests (operational)
5.30.1 Object of the test
5.30.2 Requirements
5.31 Fire sensitivity
5.31.1 Object of the test
5.31.2 Test procedure
5.31.3 Requirements
6 Test report
7 Marking
8 Data
8.1 Hardware documentation
8.2 Software documentation
Annex A (normative) Gas test chamber for CO response threshold value and cross sensitivity measurements
Annex B (normative) Construction of the heat tunnel
Annex C (normative) Apparatus for dazzling test
Annex D (normative) Apparatus for impact test
Annex E (normative) Fire test room
Annex F (normative) Smouldering (pyrolysis) wood fire (TF2)
Annex G (normative) Glowing smouldering cotton fire (TF3)
Annex H (normative) Flaming plastics (polyurethane) fire (TF4)
Annex I (normative) Liquid (heptane) fire (TF5)
Annex J (normative) Low temperature black smoke (decalene) liquid fire (TF8)
Annex K (informative) Information concerning the construction of the gas test chamber
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 General requirements
4.1 Compliance
4.2 Response threshold value of detectors using scattered or transmitted light
4.3 Individual alarm indication
4.4 Connection of ancillary devices
4.5 Monitoring of detachable detectors
4.6 Manufacturer's adjustments
4.7 On-site adjustment of response behaviour
4.8 Protection against the ingress of foreign bodies
4.9 Rate-sensitive CO response behaviour
4.10 Smoke response to slowly developing fires
4.11 Requirements for software controlled detectors
4.11.1 General
4.11.2 Software design
4.11.3 Storage of programs and data
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
5.1.2 Operating conditions for tests
5.1.3 Mounting arrangements
5.1.4 Tolerances
5.1.5 Measurement of smoke response threshold value
5.1.6 Measurement of CO response threshold value
5.1.7 Measurement of heat sensor response value
5.1.8 Provision for tests
5.1.9 Test schedule
5.1.10 Test report
5.2 Repeatability of smoke response
5.2.1 Object of the test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Repeatability of CO response
5.3.1 Object of the test
5.3.2 Test procedure
5.3.3 Requirements
5.4 Directional dependence of smoke response
5.4.1 Object of the test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Directional dependence of CO response
5.5.1 Object of the test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Directional dependence of heat response (optional function)
5.6.1 Object of the test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Lower limit of heat response (optional function)
5.7.1 Object of the test
5.7.2 Test procedure
5.7.3 Requirements
5.8 Reproducibility of smoke response
5.8.1 Object of the test
5.8.2 Test procedure
5.8.3 Requirements
5.9 Reproducibility of CO response
5.9.1 Object of the test
5.9.2 Test procedure
5.9.3 Requirements
5.10 Reproducibility of heat response (optional function)
5.10.1 Object of the test
5.10.2 Test procedure
5.10.3 Requirements
5.11 Exposure to chemical agents at environmental concentrations
5.11.1 Object of the test
5.11.2 Test procedure
5.11.3 Requirements
5.12 Long-term stability of CO response
5.12.1 Object of the test
5.12.2 Test procedure
5.12.3 Requirements
5.13 Saturation
5.13.1 Object of the test
5.13.2 Test procedure
5.13.3 Requirements
5.14 Variation in supply parameters
5.14.1 Object of the test
5.14.2 Test procedure
5.14.3 Requirements
5.15 Air movement
5.15.1 Object of the test
5.15.2 Test procedure
5.15.3 Requirements
5.16 Dazzling
5.16.1 Object of the test
5.16.2 Test procedure
5.16.3 Requirements
5.17 Dry heat (operational)
5.17.1 Object of the test
5.17.2 Test procedure
5.17.3 Requirements
5.18 Dry heat (endurance)
5.18.1 Object of the test
5.18.2 Test procedure
5.18.3 Requirements
5.19 Cold (operational), smoke
5.19.1 Object of the test
5.19.2 Test procedure
5.19.3 Requirements
5.20 Cold (operational), CO
5.20.1 Object of the test
5.20.2 Test procedure
5.20.3 Requirements
5.21 Damp heat, cyclic (operational)
5.21.1 Object of the test
5.21.2 Test procedure
5.22 Damp heat, steady-state (operational)
5.22.1 Object of the test
5.22.2 Test procedure
5.22.3 Requirements
5.23 Damp heat, steady-state (endurance)
5.23.1 Object of the test
5.23.2 Test procedure
5.23.3 Requirements
5.24 Low humidity, steady-state (endurance)
5.24.1 Object of the test
5.24.2 Test procedure
5.24.3 Requirements
5.25 Sulfur dioxide SO2 corrosion (endurance)
5.25.1 Object of the test
5.25.2 Test procedure
5.25.3 Requirements
5.26 Shock (operational)
5.26.1 Object of the test
5.26.2 Test procedure
5.26.3 Requirements
5.27 Impact (operational)
5.27.1 Object of the test
5.27.2 Requirements
5.28 Vibration, sinusoidal (operational)
5.28.1 Object of the test
5.28.2 Test procedure
5.28.3 Requirements
5.29 Vibration, sinusoidal (endurance)
5.29.1 Object of the test
5.29.2 Test procedure
5.29.3 Requirements
5.30 Electromagnetic compatibility (EMC) immunity tests (operational)
5.30.1 Object of the test
5.30.2 Requirements
5.31 Fire sensitivity
5.31.1 Object of the test
5.31.2 Test procedure
5.31.3 Requirements
6 Test report
7 Marking
8 Data
8.1 Hardware documentation
8.2 Software documentation
Annex A (normative) Gas test chamber for CO response threshold value and cross sensitivity measurements
Annex B (normative) Construction of the heat tunnel
Annex C (normative) Apparatus for dazzling test
Annex D (normative) Apparatus for impact test
Annex E (normative) Fire test room
Annex F (normative) Smouldering (pyrolysis) wood fire (TF2)
Annex G (normative) Glowing smouldering cotton fire (TF3)
Annex H (normative) Flaming plastics (polyurethane) fire (TF4)
Annex I (normative) Liquid (heptane) fire (TF5)
Annex J (normative) Low temperature black smoke (decalene) liquid fire (TF8)
Annex K (informative) Information concerning the construction of the gas test chamber
Bibliography