Scope
ISO 3746:2010
Sound Power Level — Survey Method
This test determines sound power levels of noise sources using an enveloping measurement surface and sound pressure level measurements. It is a survey-grade method suitable for field measurements of machinery, equipment, and industrial sources in moderately reflective environments. The method is widely used for noise compliance verification, product development, and environmental impact assessments. Accredited testing ensures consistent, defensible results for regulatory compliance and product labeling. This method bridges the gap between laboratory-grade precision and practical field measurements.
What it measures
- Sound power level (Lw) in decibels
- A-weighted and frequency-weighted sound power
- Directional sound power distribution
- Acoustic performance of noise sources
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DIN EN ISO 3744
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BS EN ISO 3744
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NF EN ISO 3744
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UNI EN ISO 3744
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UNE EN ISO 3744
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NEN EN ISO 3744
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DIN EN ISO 3745
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BS EN ISO 3745
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NF EN ISO 3745
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UNI EN ISO 3745
🇪🇸
UNE EN ISO 3745
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NEN EN ISO 3745
1,868
Accredited labs
20
Countries
Showing 376–393 of 393 labs
(HSG 248) – 2021
ASB/10 based on HSG 248
(PCM) based on HSG 248
ASB/6 based on HSG 248
BS EN ISO 14644-1:2015
+ 3 more
VWR International
Active
TEMPERATURE
parameters and ranges)
indicators or recorders
WEIGHING INSTRUMENTS
Vintec Laboratories
Active
(HSG 248) – 2021
(PCM) based on HSG 248
P052 based on HSG 248
WSP UK
Active
(HSG 248) – 2021
AFC based on HSG 248
(PCM) based on HSG 248
SSA based on HSG 248
EN 13501-2
DIN 51363-2
BS 1363-1
BS 476: Part 21:1987 Section 5
ISO 834:1975:Sections 5, 6, 7
+ 3 more
Wessex Power Technology
Active
TEMPERATURE
controllers, and recorders)
RELATIVE HUMIDITY
Analysts’ Guide (HSG 248)
(PCM) based on HSG 248
staining based on HSG 248
(HSG 248) – 2021
SOP 12 based on HSG 248
(PCM) based on HSG 248
SOP 11 based on HSG 248
Westward Laboratories
Active
ISO 21528-2
BS ISO 4832:2006
BS ISO 16649-2:2001
Method No 2.9 based on BS EN ISO
Method No 2.12 based on BS EN
+ 3 more
Wil-Test Solutions
Active
BS 1377-2:2022
BS 1377-9:1990
DIN EN 1097-5
BS EN ISO 17892-1:2014+A1:2022
purposes (BS 1377-2:2022
Winkhaus (UK)
Active
DIN EN 12046-2
DIN EN 12094-8
DIN EN 949
BS 6375-2:2009
DIN EN 950
+ 3 more
Wishart Group (NI)
Active
TIME INTERVAL
Betriebsübertragungsmaß
TEMPERATURE
ROTATION SPEED
Wood Group UK
Active
IEC 61400-12-1
IEC 61400-12-3
IEC 61400-50
IEC 61400-12
IEC 61400-50-2
+ 3 more
i2 FAST
Active
BS 4401-1:1998 Using
N008-1 based on BS EN
ISO 12966-4 2015
N008-2 based on BS EN
N011 based on BS 4401-9:1975 and BS 770-
+ 3 more
ifp-labs UK West Yorkshire
Active
on BS 4401:Part 3:1970(1986)
ISO 12966-1:2014 and
ISO 12966-4
CH 4026 based on BS 5766:Part
CH 4001 based on BS EN 12014-
+ 3 more
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