BS 5445-7:1984
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Components of automatic fire detection systems Specification for point-type smoke detectors using scattered light, transmitted light or ionization
Hardcopy , PDF
01-06-2003
English
31-05-1984
National foreword
Cooperating organizations
Brief history
1. Object and field of application
2. Methods of test and test schedules
3. General requirements
4. Response threshold value
5. Switch-on
6. Repeatability
7. Directional dependence
8. Reproducibility
9. Variation of supply voltage
10. Air movement
11. High ambient temperature
12. Ambient light
13. Vibration
14. Humidity
15. Shock
16. Impact
17. Corrosion
18. Insulation resistance
19. Dielectric shock
20. Low ambient temperature
21. Fire sensitivity
Annexes
A. Test schedule
B. Measurement of the response threshold values in
the wind tunnel
C. Switch on test
D. Repeatability test
E. Test for directional dependence
F. Reproducibility test
G. Variations of supply voltage test
H. Test for sensitivity to air movement
J. High ambient temperature test
K. Sensitivity to ambient light test
L. Vibration test
M. Humidity test
N. Shock test
O. Impact test
P. Corrosion test
Q. Insulation resistance test
R. Dielectric strength test
S. Low ambient temperature test
Table
1. Test schedule for smoke detectors
Figures
1. Arrangement of smoke detector and test apparatus
in the wind tunnel
2. Ionization measuring chamber: method of operation
3. Ionization measuring chamber: construction
4. Ionization measuring chamber: current-voltage
characteristic
5. Operating circuit
6. Dazzling apparatus
7. Shock test apparatus
8. Impact apparatus
9. Corrosion test apparatus (10 litre)
National particularity
National appendices
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