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eLibrary > BS ISO 10302-1:2024 - TC Tracked Changes. Acoustics. Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices - Airborne noise measurement >

BS ISO 10302-1:2024 - TC Tracked Changes. Acoustics. Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices - Airborne noise measurement, 2024

A-30428174.pdf [Go to Page]
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions [Go to Page]
3.1 General definitions
3.2 Acoustical definitions
3.3 Aerodynamic definitions
4 Limitations of measurement
5 Design and performance requirements for test plenum [Go to Page]
5.1 General
5.2 Test plenum: main assembly
5.3 Mounting panel assembly
5.4 Adjustable exit port assembly
5.5 Insertion loss of test plenum
5.6 Instrumentation for static pressure measurement
6 Installation [Go to Page]
6.1 Installation of test plenum in test room
6.2 Direction of airflow
6.3 Mounting of air-moving device
7 Operation of air-moving device [Go to Page]
7.1 Input power [Go to Page]
7.1.1 Alternating current (AC) air-moving devices
7.1.2 Direct current (DC) air-moving devices
7.2 Points of operation (AC and DC air-moving devices) [Go to Page]
7.2.1 Required points of operation
7.2.2 Method A (conventional method)
7.2.3 Method B (alternative method)
7.2.4 Procedure
8 Measurement procedures [Go to Page]
8.1 General
8.2 Microphone positions for measurements in an essentially free field over a reflecting plane [Go to Page]
8.2.1 General
8.2.2 Fixed points on a hemisphere
8.2.3 Coaxial circular paths in five or more parallel planes
8.3 Preparations for measurements
8.4 Operational test of air-moving device
9 Measurement uncertainty
10 Information to be recorded
11 Information to be reported
Annex A (normative) Micro-fan p-q curve measurement method
Annex B (informative) Effects of air density
Annex C (informative) Data formats for presentation
Annex D (informative) Air-moving device acoustical noise specification
Annex E (informative) Guidance on the development of information on measurement uncertainty
Bibliography [Go to Page]

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