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
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Bundesministerium der Verteidigung Bundeswehrkrankenhaus Berlin Abteilung XVI Laboratoriumsmedizin
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NRBC-Normoblasten
Anteil unreifer Retikulozyten
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Enteroaggregative E. coli
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DIN ISO 17289
DIN EN ISO 10523
DIN EN 27888
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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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Buro Blauw Luchtkwaliteit
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DIN EN ISO 21877
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DIN EN 13284-1
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C G C Laboratory
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(HSG 248) – 2021
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SOP 5, based on HSG 248
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Radiometrie 100 µW/cm²
stärkemessgeräte
UV-A 365nm
Linearität der
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Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
verwendete Abkürzungen:
ETSI EN 301 489-1: V2.2.3
EN 61000-3-2 and EN 61000-3-3
IEC 61000-6-1
IEC 61000-4-4: 2012
1.4 Electrostatic Discharge EN 61000-4
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C.W.E. Services
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(HSG 264, 2012)
HSG 227 (2004))
Safety Executive guides HSG 264
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CAE
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NF T 90-412
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DIN 38402-A 11
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DIN ISO 5667-5 (A 14)
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UNE-EN ISO 140-4
UNE-EN ISO 16283-2
UNE-EN ISO 140-7
UNE-EN ISO 140-5
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DIN EN ISO 17294-2
DIN EN ISO 14403-2
DIN EN ISO 13395
VDE 414-9-11
DIN EN ISO 10304-1
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CANAGROSA LAB&SERVICES
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ISO 2808
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UNE-EN ISO 2808
ISO 2409
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CANDELTEC
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IEC 62471-7
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UNE-EN 13032-1
UNE-EN 62471
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Tensile testing of metallic materials (I
Vickers hardness test (ISO 6507)
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Railway vehicles — specific test require
Railway — traction effort and braking fo
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ISO 9308-1
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DIN EN ISO 11205
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ISO 14189
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