Standard
[CURRENT]
ISO 7240-24:2016-04
Fire detection and fire alarm systems - Part 24: Fire alarm loudspeakers
German title
Brandmeldeanlagen - Teil 24: Elektroakustische Lautsprecher
Publication date
2016-04
Original language
English
Pages
39
Publication date
2016-04
Original language
English
Pages
39
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Content
Content (en)
Foreword
Introduction
Scope
Normative references
Terms, definitions, symbols and abbreviated terms
Show subsection Close subsection Terms and definitions
Abbreviated terms
Requirements
Show subsection Close subsection Compliance
Frequency response limits
Durability
Construction
Show subsection Close subsection Provision for external conductors
Materials
Ingress protection
Access
Tests
Show subsection Close subsection General
Show subsection Close subsection Atmospheric conditions for tests
Operating conditions for tests
Mounting arrangements
Tolerances
Frequency response measurement and sensitivity calculation
Show subsection Close subsection Measuring arrangement
Measurements
Sensitivity calculation
Frequency response measurement and sensitivity calculation for loudspeakers requiring dedicated system equalization
Show subsection Close subsection General
Measuring arrangement
Measurements
Provision for tests
Test schedule
Reproducibility
Show subsection Close subsection Object of the test
Test procedure
Requirements
Rated impedance
Show subsection Close subsection Object of the test
Test procedure
Requirements
Horizontal and vertical coverage angles
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
Horizontal coverage angle
Vertical coverage angle
Requirements
Maximum sound pressure level
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
Measurement of maximum sound pressure level
Requirements
Rated noise power (durability)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
Conditioning
Measurements during conditioning
Final measurements
Requirements
Dry heat (operational)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of specimen during conditioning
Conditioning
Measurements during conditioning
Final measurements
Requirements
Dry heat (endurance)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Cold (operational)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of specimen during conditioning
Conditioning
Measurements during conditioning
Final measurements
Requirements
Damp heat, cyclic (operational)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Measurements during conditioning
Final measurements
Requirements
Damp heat, steady-state (endurance)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Damp heat, cyclic (endurance)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Sulfur dioxide (SO) corrosion (endurance)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Shock (operational)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Impact (operational)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Vibration, sinusoidal (operational)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Measurements during conditioning
Final measurements
Requirements
Vibration, sinusoidal (endurance)
Show subsection Close subsection Object of the test
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Ingress protection
Show subsection Close subsection Object of the test
Enclosure of the loudspeaker
Test procedure
Show subsection Close subsection General
State of the specimen during conditioning
Conditioning
Final measurements
Requirements
Test report
Marking
Data
Acoustical measurements (normative)
Show subsection Close subsection Measurement environments
Show subsection Close subsection General
Free-field condition
Half-space free-field condition
Standard baffle
Ground-plane measurement
Comparative measurements
Measurement method
Show subsection Close subsection Measuring distance
Background noise
Preconditioning
Measuring equipment
Measuring rated noise power (durability) (normative)
Show subsection Close subsection Measurement environment
Show subsection Close subsection General
Test room
Measuring equipment
Simulated program signal
Normal measuring conditions
Measurement conditions for loudspeakers requiring dedicated system equalization
Loudspeaker physical references (informative)
Bibliography
Cooperation at DIN
Please get in touch with the relevant contact person at DIN if you have problems understanding the content of the standard or need advice on how to apply it.
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