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
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Applus Netherlands
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DIN EN 16407-1
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ÖNORM EN ISO 17636-1
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ÖNORM EN ISO 17636-2
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Balis Micro
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AM09 based on BS ISO 21527-1:
DIN EN ISO 21528-2
DIN EN ISO 4833-2
BS ISO 15214:1998
0.95) based on BS ISO 21527-2:2008
Buro Blauw Luchtkwaliteit
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DIN EN ISO 21877
DIN EN ISO 16911-1
DIN EN 13284-1
NEN 2826
DIN EN 14789
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DEKRA Certification
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DIN EN 60076-3
DIN EN 60076-10
DIN EN 60076-1
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DIN EN 60076-11
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Efectis Nederland
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ISO 5660-1
DIN EN 1365-1
EN 13381-4
DIN EN 1634-1
EN 1365-2
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BS ISO 11338-1:2003
NEN-ISO 10849
DIN EN ISO 16911-1
IS EN 1948-1:2006 2006
BS ISO 9096:2017
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FlexSpect
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#EN ISO 5164:14
# EN 116-97
#ISO 12185
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Intertek Polychemlab
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DIN EN ISO 10675-1
DIN EN ISO 19458
DIN EN ISO 179-1
NEN 6953
DIN EN ISO 10675-2
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Kalibra International
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Kiwa Assurance
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EN ISO 11925-2
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DIN EN 14509
DIN EN ISO 13163
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Kiwa Nederland
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ISO 2781
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ISO 6259-1:2015
ISO 6259-3
ISO 6259-2:1997
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NORMEC QS
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Navobi
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07L.1.11 based on ISO 5984:2002
DIN EN ISO 11290-2
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Normec VRO
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#EN ISO 5164:14
# EN 116-97
NEN 4400-1
# ISO 13736
#ISO 6618
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Olfasense
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ISO 10780
DIN EN 13725:2003-07 und Berichtigung
AG2 and IS EN 15259:2007
ISO 11819-1
(N 2 O) 0,000008
DIN EN ISO 16911-1
AG2 and IS EN 15259:2007
DIN EN 14790
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ETSI EN 301 489-1 V2.2.3 2019-11
ASTM D4157-13
BS ISO 11338-1:2003
DIN EN ISO 16911-1
NEN-EN 14791 2
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