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
🇮🇹
UNI EN ISO 9614-1
🇪🇸
UNE EN ISO 9614-1
🇳🇱
NEN EN ISO 9614-1
1,670
Accredited labs
18
Countries
Showing 626–650 of 1,670 labs
IANESCO
Active
DIN EN ISO 17294-2
ISO 7086-2:2000
DIN EN ISO 14403-2
DIN EN ISO 13395
NF T 90-412
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DIN 4150-1
DIN 4150-2
DIN 4150-3
DIN EN 61800-5-1: 2017
ICAR-CM2T
Active
NF EN ISO 1927-3
NF EN ISO 1927-5
ASTM C 862
ASTM C 865
(DIN EN 61094-4:1996)
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IDIADA AUTOMOTIVE TECHNOLOGY
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DIN EN 1385
EN 17092-1:2020
DIN EN ISO 5077
EN 1317-1
DIN EN ISO 13688
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IFB Eigenschenk
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DIN EN ISO 17892-2
DIN EN ISO 17892-3
DIN EN ISO 17892-4
DIN 18121-2
DIN 18125-2
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Kraft 10 kN
Sound power — survey method (ISO 3746)
Radaufstandskraft- 10 kN
Prüfkraftmesseinrichtung
Länge 10 mm
HbA1c
Vitamin A
Vitamin B1
Vitamin B2
Vitamin B6
+ 3 more
IFTS
Active
NF X 45-301
NF X 45-302
NF X 45-303
ASTM F795-88
NF P 90-319 de 02/2011
+ 3 more
UNE-EN 60942
UNE-EN 61672-3
UNE-EN 60804
UNE-EN 60651
UNE-EN 61252
+ 1 more
Thrombozytenaggregometrie
Drogen- und
Medikamentenscreening
Freie Fettsäuren
Linolensäure, Eicosapentaensäure
+ 3 more
ILSA SPA
Active
UNI EN 17702-2
DIN EN 15476
ISO 14820-2
NF EN 13520 ISO 17704
EN 17703
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ASTM F1978
ASTM G195
DIN EN ISO 4287
DIN EN ISO 4288
DIN EN ISO 5470-1
+ 3 more
Temperaturanzeigegeräte –100 °C
- Thermopaare, Thermoelemente
Typ J, K und N
für Widerstands- –100 °C
- Direktanzeigende Thermometer
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Fettsäureprofil der
Erythrozytenmembran
Kurzkettige Fettsäuren
MMA (Methylmethacrylat)
Gesamtporphyrine
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Hämoglobin A1c (HbA1c)
Differenzialblutbild
Erythrozyten
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Hämatokrit
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Eosinophile, Basophile, MCV, MCH)
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IMPELAB
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DIN EN ISO 7932
DIN EN ISO 6579-1
DIN EN ISO 7937
DIN EN ISO 11290-1
0.95) based on BS ISO 21527-2:2008
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IMQ SpA
Active
DIN EN 62053-23: 2017-09
DIN EN ISO 11816-1
IEC 62109-1
IEC 60598-2-2
DIN EN 62053-24
+ 3 more
IMQ SpA
Active
DIN EN 14511-2
DIN EN 13141-7
DIN EN 60704-2-10
DIN EN 16147
IEC 60704-2-1
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DIN EN ISO 10705-2
ISO 11731
DIN EN 15634-1
ISO 15705
EPA 353.2 1993
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INDUSTRIAL LAB R. REIG
Active
SM 2120
SM 4500-Cl G
UNE EN 27888
SM 4500-H+ B
SM 2130
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INERCO INSPECCIÓN Y CONTROL
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UNE-EN 15259
UNE-EN 13284-1
UNE 77225
EPA 8
UNE 77227
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