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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UNE-EN ISO 6892-1
DIN EN 10002-1
ASTM E 8
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ERC Testing
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DIN EN 1863-1
BS EN ISO 10077-1:2006
published 2024) for BS EN
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ERGO Umweltinstitut
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DIN ISO 10381-5
DIN ISO 18400-102
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Sound intensity — scanning method (ISO 9
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Vibration measuring instruments — test m
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NF X 46-032
NF X46-031
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NF X43-050 (parties utiles de
NF X 43-050
NF X 43-269 - Annexe K
NF EN 14346 –
NF X43-050 (parties utiles de la
NF X 43-269 – Annexe K
NF X 43-050
NF X 43-269 - Annexe K
NF X43-050 (parties utiles de la
NF X 43-269 - Annexe K
NF X 43-269 – Annexe K
NF X 43-050
NF X43-050 (parties utiles de la
NF X43-050 (parties
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NF X 43-269 - Annexe K
NF X 43-269 – Annexe K
NF X 43-050
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NF ISO 21363
UNE 64106
BS ISO 6731:2010
UNE-EN ISO 712
UNE-EN ISO 5534
ISO 13580
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DIN ISO 11464
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SM 4500-NH3 F
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DIN EN ISO 21528-2
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0.95) based on BS ISO 21527-2:2008
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DIN ISO 16649-2
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DIN EN ISO 13395
NF T 90-412
NF U47-101
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DIN 53483-2
DIN EN ISO 15213-2
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