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BS ISO 4678:2024

BS ISO 4678:2024

$102.76

Ships and marine technology. Noise measurement method for HVAC system in accommodation spaces

Published By Publication Date Number of Pages
BSI 2024 18
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PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Instrumentation
4.1 Microphone with sound level meter or other microphone amplifier
4.2 Microphone cable
4.3 Frequency analyser
11 4.4 Nose cone and windshield
4.5 Sound level recorder or other data sampling devices
4.6 Calibration of instruments
5 General requirements
6 Measurement procedure
6.1 Outlet noise measurement
12 6.2 Background noise measurement and outlet noise correction
13 6.3 Reverberation time measurement
6.4 Result processing
6.4.1 Exhaust outlet noise level
14 6.4.2 Calculation of the cabin sound absorption
6.4.3 Determination of the vent noise levels
15 6.5 Measurement uncertainties
7 Measurement report
7.1 Measurement company and personnel
7.2 Ship particulars
7.3 HVAC particulars
16 7.4 Measuring instruments
7.5 Measuring conditions
7.6 Measurement data
17 Bibliography

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BS ISO 4678:2024
$102.76