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BSI 24/30466871 DC:2024 Edition

BSI 24/30466871 DC:2024 Edition

$13.70

BS ISO 7240-27 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

Published By Publication Date Number of Pages
BSI 2024 71
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PDF Catalog

PDF Pages PDF Title
9 Foreword
10 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
4 General requirements
4.1 Compliance
4.2 Response threshold value of detectors using scattered or transmitted light
4.3 Individual alarm indication
13 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
14 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
15 5 Test methods
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
16 5.1.6 Measurement of CO response threshold value
5.1.7 Measurement of heat response value
17 5.1.8 Provision for tests
18 5.1.9 Test schedule
5.1.10 Test report
19 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
20 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
21 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
22 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
23 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
24 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
25 5.13.2 Test procedure
5.13.3 Requirements
5.14 Variation in supply parameters
5.14.1 Object of the test
26 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
27 5.15.3 Requirements
5.16 Dazzling
5.16.1 Object of the test
5.16.2 Test procedure
28 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
29 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
30 5.19.3 Requirements
5.20 Cold (operational), CO
5.20.1 Object of the test
5.20.2 Test procedure
31 5.20.3 Requirements
5.21 Damp heat, cyclic (operational)
5.21.1 Object of the test
5.21.2 Test procedure
32 5.22 Damp heat, steady state (operational)
5.22.1 Object of the test
5.22.2 Test procedure
33 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
34 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
35 5.25.3 Requirements
5.26 Shock (operational)
5.26.1 Object of the test
5.26.2 Test procedure
36 5.26.3 Requirements
5.27 Impact (operational)
5.27.1 Object of the test
5.27.2 Test procedure
37 5.27.3 Requirements
5.28 Vibration, sinusoidal (operational)
5.28.1 Object of the test
5.28.2 Test procedure
38 5.28.3 Requirements
5.29 Vibration, sinusoidal (endurance)
5.29.1 Object of the test
39 5.29.2 Test procedure
5.29.3 Requirements
5.30 Electromagnetic compatibility (EMC) immunity tests (operational)
5.30.1 Object of the test
40 5.30.2 Test procedure
5.30.3 Measurements
5.30.4 Requirements
5.31 Fire sensitivity
5.31.1 Object of the test
5.31.2 Test procedure
42 5.31.3 Requirements
6 Test report
7 Marking
43 8 Data
8.1 Hardware documentation
8.2 Software documentation
45 Annex€A (normative) Gas test chamber for CO response threshold value and cross sensitivity measurements
46 Annex€B (normative) Construction of the heat tunnel
49 Annex€C (normative) Apparatus for dazzling test
50 Annex€D (normative) Apparatus for impact test
52 Annex€E (normative) Fire test room
54 Annex€F (normative) Smouldering (pyrolysis) wood fire (TF2)
57 Annex€G (normative) Glowing smouldering cotton fire (TF3)
60 Annex€H (normative) Flaming plastics (polyurethane) fire (TF4)
63 Annex€I (normative) Liquid (heptane) fire (TF5)
66 Annex€J (normative) Low temperature black smoke (decalene) liquid fire (TF8)
69 Annex€K (informative) Information concerning the construction of the gas test chamber
71 Bibliography

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BSI 24/30466871 DC
$13.70