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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AN DIAG
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NF X 43-269
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ANALY-CO Ile de France
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NF X43-551
IS EN 1948-1:2006 2006
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QOP03 based on HSG 248
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UNE-EN ISO 16283-1
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EURAMET CG-2
CEM DI-014
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ASTM D 1209
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Messschieber für 0 mm
Außen-, Innen- und > 500 mm
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Tiefenmessschieber * 0 mm
Sondermessschieber 0 mm
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AQUANALYSE Laboratoire
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NF T 90-412
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DIN EN ISO 10304-1
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BS EN ISO 20344::2011 Clause 5.1
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ISO 11611
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IEC 61400-11:2012/ AMD:2018
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AS International Corporation
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ISO 5983-1:2005/Cor.1:2008, ISO20483:201
07L.1.07 based on ISO 6865:2001
ISO 712
07L.1.02 based on ISO 6496:1999,
ISO 12966-2
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ISO 2549
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UNE-EN ISO 10545-2
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ASTM C373
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