Scope
ISO 3747:2010
Sound Power Level — In-Situ Reference Source Method
This engineering/survey method determines sound power levels using a calibrated reference sound source to account for acoustic environmental conditions during in-situ measurements. It is particularly useful for large or immobile equipment where laboratory testing is impractical, and for on-site verification of noise compliance. The reference source approach compensates for acoustic environmental effects, improving accuracy compared to basic survey methods. Accreditation ensures proper reference source maintenance and measurement protocols are followed. This method is essential for field acceptance testing and environmental noise assessments.
What it measures
- Sound power level (Lw) referenced to 1 pW
- A-weighted and frequency-weighted sound power
- Environmental acoustic correction factors
- In-situ acoustic performance
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DIN EN ISO 3746
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BS EN ISO 3746
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NF EN ISO 3746
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UNI EN ISO 3746
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UNE EN ISO 3746
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NEN EN ISO 3746
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DIN EN ISO 9614-1
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BS EN ISO 9614-1
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NF EN ISO 9614-1
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UNI EN ISO 9614-1
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UNE EN ISO 9614-1
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NEN EN ISO 9614-1
1,868
Accredited labs
20
Countries
Showing 1,376–1,400 of 1,868 labs
UNE-EN 13032-1
UNE-EN 13032-4
UNE-EN 62722-2-1
IEC 62722-2-1
IEC 62717
+ 1 more
UNE-EN ISO 16283-1
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
DIN EN ISO 21528-1
DIN 53483-2
DIN EN ISO 21528-2
DIN ISO 11665-4
DIN EN ISO 16649-3
+ 3 more
ISO 18787
AM09 based on BS ISO 21527-1:
DIN EN ISO 11290-1
NF V04-408
0.95) based on BS ISO 21527-2:2008
+ 2 more
DIN EN ISO 21528-1
NF V08-401
DIN EN ISO 21528-2
DIN EN ISO 6888-1
DIN EN ISO 6888-2
+ 3 more
DIN EN ISO 21528-1
DIN EN ISO 21528-2
DIN EN ISO 6888-1
DIN EN ISO 6888-2
DIN ISO 16649-2
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Absolutdruck Pabs
> 0,05 bar
Negativer und
positiver Überdruck p
(ein- oder mehrgängige
+ 1 more
SKZ - Testing
Active
Bauart wie GR 1482
DIN ISO 48-4
DIN ISO 7619-2
DIN EN ISO 868
DIN EN ISO 2039-1
+ 3 more
IEC 61000-4-2: 2008
IEC 61000-4-3: 2006
DIN EN IEC 61000
IEC 61000-4-4: 2012
IEC 61000-4-5: 2005
+ 3 more
DIN EN ISO 11737-2
DIN 58953-6
DIN 1946-4
DIN EN 13959
DIN EN ISO 8536-4
+ 3 more
NF X 43-050
NF X 43-269
NF X 43-269 – Annexe K
NF X43-050 (parties utiles de la
DIN ISO 16000-3
+ 3 more
SMA Solar Technology
Active
IEC 61000-4-2: 2008
VDE 0847-4-2
IEC 61000-4-3: 2006
VDE 0847-4-3
IEC 61000-4-4: 2012
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DIN EN ISO 1833-13
DIN EN ISO 1833-14
DIN EN ISO 1833-16
DIN EN ISO 1833-17
DIN EN ISO 1833-18
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ISO 13737
NF ISO 22286
ASTM D 2137
NF F19-503
NF T60-190
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DIN EN 1097-7
DIN EN 1097-6
DIN EN 933-10
DIN EN 933-8
DIN EN 1427
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DIN EN ISO 10545-3
DIN EN 997
DIN EN ISO 10545-4
DIN EN ISO 10545-14
DIN EN ISO 10545-6
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SOCOR
Active
DIN EN 14385
NF X43-551
ETSI EN 301 489-1 V2.2.3 2019-11
DIN EN 13039
DIN EN ISO 21656
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SOCOTEC Asbestos
Active
(HSG 248) – 2021
SCI/ASB/003 based on HSG 248
(PCM) based on HSG 248
SCI/ASB/001 based on HSG 248
SOCOTEC ENVIRONNEMENT
Active
DIN EN 14385
ETSI EN 301 489-1 V2.2.3 2019-11
DIN EN ISO 21877
NF X 43-317
DIN EN 14181
+ 3 more
SOCOTEC UK
Active
DIN EN 13284-1
ENV/054 based on BS EN
ISO 11731
DIN EN 14791
IEC 60519-11
+ 3 more
ISO 13347-3
BS EN ISO 5801:2008 method
ISO 14695
SOLVIAS FRANCE
Active
ISO 11737-3
DIN EN ISO 11737-2
NF EN 13824 (norme
BS EN ISO 11737-1:2018
UNE-EN ISO 140-5
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
UNE-EN ISO 140-7
UNE-EN ISO 16283-1
+ 1 more
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