ISO 7240-5:2018

INTERNATIONAL ISO
STANDARD 7240-5
Third edition
2018-05
Fire detection and fire alarm
systems —
Part 5:
Point type heat detectors
Systèmes de détection et d'alarme incendie —
Partie 5: Détecteurs de chaleur ponctuels
Reference number
©
ISO 2018
© ISO 2018
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ii © ISO 2018 – All rights reserved

Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 2
4.1 Compliance . 2
4.2 Classification . 2
4.3 Position of heat sensitive elements . 3
4.4 Individual alarm indication . 3
4.5 Connection of ancillary devices . 3
4.6 Monitoring of detachable detectors . 3
4.7 Manufacturer's adjustments . 3
4.8 On-site adjustment of response behaviour . 4
4.9 Requirements for software controlled detectors . 4
4.9.1 General. 4
4.9.2 Software design. 4
4.9.3 The storage of programs and data . 4
5 Tests . 4
5.1 General . 4
5.1.1 Atmospheric conditions for tests. 4
5.1.2 Operating conditions for tests . 5
5.1.3 Mounting arrangements . 5
5.1.4 Tolerances . 5
5.1.5 Measurement of response time . 5
5.1.6 Provision for tests . 6
5.1.7 Test schedule . 6
5.2 Directional dependence . 8
5.2.1 Object . 8
5.2.2 Test procedure . 8
5.2.3 Requirements . 8
5.3 Static response temperature . 8
5.3.1 Object . 8
5.3.2 Test procedure . 9
5.3.3 Requirements . 9
5.4 Response times from typical application temperature . 9
5.4.1 Object . 9
5.4.2 Test procedure . 9
5.4.3 Requirements . 9
5.5 Response times from 25 °C.10
5.5.1 Object .10
5.5.2 Test procedure .10
5.5.3 Requirements .10
5.6 Response times from high ambient temperature (Dry heat operational) .10
5.6.1 Object .10
5.6.2 Test procedure .10
5.6.3 Requirements .10
5.7 Variation in supply parameters .11
5.7.1 Object .11
5.7.2 Test procedure .11
5.7.3 Requirements .11
5.8 Reproducibility .11
5.8.1 Object .11
5.8.2 Test procedure .11
5.8.3 Requirements .11
5.9 Cold (operational) .11
5.9.1 Object .11
5.9.2 Test procedure .12
5.9.3 Requirements .12
5.10 Dry heat (endurance) .12
5.10.1 Object .12
5.10.2 Test procedure .13
5.10.3 Requirements .13
5.11 Damp heat, cyclic (operational) .13
5.11.1 Object .13
5.11.2 Test procedure .14
5.11.3 Requirements .14
5.12 Damp heat, steady state (endurance) .15
5.12.1 Object .15
5.12.2 Test procedure .15
5.12.3 Requirements .15
5.13 Sulphur dioxide SO corrosion (endurance) .16
5.13.1 Object .
...