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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Appendix 5 of HSG 227 (2004))
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Thrombozytenfunktion
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Everolimus
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Eindringkörper für 75°
Sound system equipment — speech transmis
Länge der
Schnittlinien *
Vergrößerungsnormale Abflachung bis 300
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Durchfluss von Gasen 17 mL/s
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Strömungswiderstand 5 mL/min
15,0 mL/min
Laminar Flow Elemente 17 mL/min
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Kötter Consulting Engineers
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DIN 4150-1
DIN 4150-2
DIN 4150-3
DIN EN 61400-11
ISO 9613-2
Messschieber für Außen-, 0 mm
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> 300 mm
Tiefenmessschieber 0 mm
Höhenmessschieber 0 mm
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LAB (UK)
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(HSG 248) – 2021
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LAB-EXPERT
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NF X43-050 (parties utiles de la
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NF ISO 22262-1 (parties utiles
LABACUSTIC
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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
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UNE-EN ISO 27888
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CEN / TS 14235
NF T 90-412
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NF U47-036-1
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AOAC 985.35
UNE-EN 17298
ISO 5815-1
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EN 13087-2
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NF T 90-412
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NF-T 90-101
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DIN EN ISO 21528-2
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VDE 414-9-11
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DIN ISO 11466
NF X31-120
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NF X31-147
DIN EN 16175-1
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DIN EN ISO 13395
NF T 90-412
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NF T 90-412
DIN EN ISO 21528-1
DIN EN ISO 7899-1
VDE 414-9-11
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