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AS 7240.20-2012
[Current]Fire detection and alarm systems, Part 20: Aspirating smoke detectors
Adopts ISO 7240-20:2010 to specify requirements and methods of test for aspirating smoke detectors in fire detection and fire alarm systems in and around buildings. Does not cover aspirating smoke detectors that are intrinsically safe for use in hazardous conditions.
Published: 22/10/2012
Pages: 54
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Requirements
4.1 Compliance
4.2 Classification
4.3 Individual visual alarm indication
4.4 Connection of ancillary devices
4.5 Manufacturer's adjustments
4.6 On-site adjustment of response behaviour
4.7 Response to slowly developing fires
4.8 Mechanical strength of the pipework
4.9 Hardware components and additional sensing elements in the sampling device
4.10 Airflow monitoring
4.10.1
4.10.2
4.10.3
4.10.4
4.11 Power supply
4.12 Marking
4.13 Data
4.14 Additional requirements for software controlled detectors
4.14.1 General
4.14.2 Software documentation
4.14.2.1
4.14.2.2
4.14.3 Software design
4.14.4 The 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 response threshold value
5.1.5.1 General
5.1.5.2 Typical r.t.v. measurement procedure
5.1.6 Test of the airflow monitoring facility
5.1.7 Provision for tests
5.1.8 Test schedule
5.2 Repeatability
5.2.1 Object
5.2.2 Test procedure
5.2.3 Requirements
5.3 Reproducibility
5.3.1 Object
5.3.2 Test procedure
5.3.3 Requirements
5.4 Variation in supply parameters
5.4.1 Object
5.4.2 Standard test procedure
5.4.2.1 Test procedure
5.4.2.2 Requirements
5.4.3 Alternative test procedure
5.5 Dry heat (operational)
5.5.1 Object
5.5.2 Test procedure
5.5.2.1 Reference
5.5.2.2 Initial measurements
5.5.2.3 State of the specimen during conditioning
5.5.2.4 Conditioning
5.5.2.5 Measurements during conditioning
5.5.2.6 Final measurements
5.5.3 Requirements
5.6 Cold (operational)
5.6.1 Object
5.6.2 Test procedure
5.6.2.1 Reference
5.6.2.2 Initial measurements
5.6.2.3 State of the specimen during conditioning
5.6.2.4 Conditioning
5.6.2.5 Measurements during conditioning
5.6.2.6 Final measurements
5.6.3 Requirements
5.7 Damp heat, steady state (operational)
5.7.1 Object
5.7.2 Test procedure
5.7.2.1 Reference
5.7.2.2 Initial measurements
5.7.2.3 State of the specimen during conditioning
5.7.2.4 Conditioning
5.7.2.5 Measurements during conditioning
5.7.2.6 Final measurements
5.7.3 Requirements
5.8 Damp heat, steady state (endurance)
5.8.1 Object
5.8.2 Test procedure
5.8.2.1 Reference
5.8.2.2 Initial measurements
5.8.2.3 State of the specimen during conditioning
5.8.2.4 Conditioning
5.8.2.5 Final measurements
5.8.3 Requirements
5.9 Sulfur dioxide (SO2) corrosion (endurance)
5.9.1 Object
5.9.2 Test procedure
5.9.2.1 Reference
5.9.2.2 Initial measurements
5.9.2.3 State of the specimen during conditioning
5.9.2.4 Conditioning
5.9.2.5 Final measurements
5.9.3 Requirements
5.10 Shock (operational)
5.10.1 Object
5.10.2 Test procedure
5.10.2.1 Reference
5.10.2.2 Initial measurements
5.10.2.3 State of the specimen during conditioning
5.10.2.4 Conditioning
5.10.2.5 Measurements during conditioning
5.10.2.6 Final measurements
5.10.3 Requirements
5.11 Impact (operational)
5.11.1 Object
5.11.2 Test procedure
5.11.2.1 Reference
5.11.2.2 Initial measurements
5.11.2.3 State of the specimen during conditioning
5.11.2.4 Conditioning
5.11.2.5 Measurements during conditioning
5.11.2.6 Final measurements
5.11.3 Requirements
5.12 Vibration, sinusoidal (operational)
5.12.1 Object
5.12.2 Test procedure
5.12.2.1 Reference
5.12.2.2 Initial measurements
5.12.2.3 State of the specimen during conditioning
5.12.2.4 Conditioning
5.12.2.5 Measurements during conditioning
5.12.2.6 Final measurements
5.12.3 Requirements
5.13 Vibration, sinusoidal (endurance)
5.13.1 Object
5.13.2 Test procedure
5.13.2.1 Reference
5.13.2.2 Initial measurements
5.13.2.3 State of the specimen during conditioning
5.13.2.4 Conditioning
5.13.2.5 Final measurements
5.13.3 Requirements
5.14 Electromagnetic compatibility (EMC) immunity tests
5.14.1
5.14.2
5.15 Fire sensitivity
5.15.1 Object
5.15.2 Principle
5.15.3 Test procedure
5.15.3.1 Fire test room
5.15.3.1.1
5.15.3.1.2
5.15.3.2 Test fires
5.15.3.3 Mounting of the specimens
5.15.3.4 Initial conditions
5.15.3.5 Recording of fire parameters and response values
5.15.4 Requirements
5.16 Mechanical strength of pipe
6 Test report
Annex A
A.1 General
A.2 r.t.v. measurement apparatus — Example 1
A.3 r.t.v. measurement apparatus — Example 2
Annex B
B.1 Fuel
B.2 Hotplate
B.3 Arrangement
B.4 Heating rate
B.5 End-of-test condition
B.6 Test validity criteria
Annex C
C.1 Fuel
C.2 Hotplate
C.3 Arrangement
C.4 Heating rate
C.5 End-of-test condition
C.6 Test validity criteria
Annex D
D.1 Fuel
D.2 Arrangement
D.3 Ignition
D.4 End-of-test condition
D.5 Test validity criteria
Annex E
E.1 Fuel
E.2 Arrangement
E.3 Ignition
E.4 End-of-test condition
E.5 Test validity criteria
Annex F
F.1 Fuel
F.2 Conditioning
F.3 Arrangement
F.4 Ignition
F.5 End-of-test condition
F.6 Test validity criteria
Annex G
G.1 Fuel
G.2 Arrangement
G.3 Ignition
G.4 End-of-test condition
G.5 Test validity criteria
Annex H
H.1 Fuel
H.2 Arrangement
H.3 Ignition
H.4 End-of-test condition
H.5 Test validity criteria
Annex I
I.1 Fire test room
I.2 Ventilation system
Annex J
Annex K
K.1 General
K.2 Airflow measuring with worst-case sampling device
K.3 Airflow monitoring test with test pipe network
Bibliography
Cited references in this standard
Content history
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DR AS 7240.20
AS 7240.20-2012 REC:2023
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