AS 7240.8-2007

1 - AS 7240.8-2007 Fire detection and alarm systems Part 8: Carbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor
4 - PREFACE
5 - CONTENTS
8 - Introduction
9 - 1 Scope
9 - 2 Normative references
10 - 3 Definitions
10 - 4 General requirements
10 - 4.1 Compliance
10 - 4.2 Individual alarm indication
10 - 4.3 Connection of ancillary devices
10 - 4.4 Monitoring of detachable detectors
10 - 4.5 Manufacturer's adjustments
11 - 4.6 On- site adjustment of response behaviour
11 - 4.7 Rate- sensitive response behaviour
11 - 4.8 Marking
12 - 4.9 Data
12 - 4.10 Requirements for software controlled detectors
13 - 5 Tests
13 - 5.1 General
16 - 5.2 Repeatability of CO response
16 - 5.3 Directional dependence of CO response
17 - 5.4 Directional dependence of heat response
19 - 5.5 Lower limit of heat sensitivity
19 - 5.6 Reproducibility of CO response
19 - 5.6.1 Object of the test
20 - 5.7 Reproducibility of heat response
20 - 5.8 Exposure to chemical agents at environmental concentrations
21 - 5.9 Long- term stability of CO response
22 - 5.10 Saturation
22 - 5.11 Exposure to chemical agents that can be present during a fire
23 - 5.12 Variation in supply parameters
24 - 5.13 Air movement
25 - 5.14 Dry heat ( operational)
25 - 5.15 Cold ( operational)
26 - 5.16 Damp heat, cyclic ( operational)
28 - 5.17 Damp heat, steady state ( endurance)
29 - 5.18 Low humidity, steady state ( endurance)
29 - 5.19 Sulfur dioxide ( SO2) corrosion ( endurance)
30 - 5.20 Shock ( operational)
32 - 5.21 Impact ( operational)
33 - 5.22 Vibration, sinusoidal ( operational)
34 - 5.23 Vibration, sinusoidal ( endurance)
35 - 5.24 Electromagnetic compatibility ( EMC), immunity tests ( operational)
36 - 5.25 Fire sensitivity
38 - 6 Test report
39 - Annex A (normative) Gas test chamber for response threshold value and cross sensitivity measurements
40 - Annex B (normative) Heat tunnel for response time and response temperature measurements
41 - Annex C (normative) Apparatus for impact test
43 - Annex D (normative) Fire test room
45 - Annex E (normative) Smouldering (pyrolysis) wood fire (TF2)
48 - Annex F (normative) Glowing smouldering cotton fire (TF3)
51 - Annex G (normative) Open plastics (polyurethane) fire (TF4)
53 - Annex H (normative) Liquid (heptane) fire (TF5)
55 - Annex I (normative) Deep-seated smouldering cotton fire (TF9)
57 - Annex J (informative) Information concerning the construction of the gas test chamber
59 - Annex K (informative) Construction of the heat tunnel

Specifies requirements, test methods and performance criteria for point multisensor fire detectors that incorporate an electro-chemical cell for sensing CO in combination with one or more heat sensors.

First published as AS 7240.8-2007.