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
🇩🇪
DIN EN ISO 3746
🇬🇧
BS EN ISO 3746
🇫🇷
NF EN ISO 3746
🇮🇹
UNI EN ISO 3746
🇪🇸
UNE EN ISO 3746
🇳🇱
NEN EN ISO 3746
🇩🇪
DIN EN ISO 9614-1
🇬🇧
BS EN ISO 9614-1
🇫🇷
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 101–125 of 183 labs
ISO 11731
SM 5220
UNE-EN ISO 6222
UNE-EN ISO 20236
UNE EN 27888
+ 3 more
INTA
Active
ISO 16063-21
EN 55016-1-6
CEM EL-025
UNE-EN ISO 376
UNE-EN ISO 7500-1
+ 3 more
UNE-EN ISO 10704
UNE 73350-1
UNE 73311-5
ISO 11665-4
UNE 31010
+ 1 more
ITA
Active
IEC 61000-4-13: 2002
DIN EN 50121-3-2
IEC 61000-3-2: 2014
DIN EN 60601-1-2
IEC 61000-3-3
+ 3 more
IEC 61000-3-2: 2014
UNE-EN IEC 61000-3-2
UNE-EN 61000-3-2
UNE-EN IEC 61000-6-4
IEC 61000-3-3
+ 3 more
(380 - 780 nm) 1 < R ≤ 100
0,01< DO ≤ 0,1 0,1 < DO ≤ 0,3 1,1 < DO <
DIN EN 1040
DIN EN 1656
DIN EN 14561
IEC 60127-6
DIN EN 13727
+ 3 more
UNE-EN ISO 16283-1
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
JOMA INGENIERÍA Y MONTAJES
Active
UNE-EN ISO 16283-1
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
UNE 320001
ISO/IEC 18045
ISO/IEC 15408
CEM ISO
ISO/IEC 24759
+ 2 more
KROMSCHROEDER
Active
Caudal m3/h 0,010 m3/h Q 250 m3/h 0,
Caudal m3/h 0,16 m3/h Q 2500 m3/h 0,
LABACUSTIC
Active
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
+ 1 more
LABAQUA, S.A. (Unipersonal)
Active
UNE-EN ISO 27888
SM 2540
UNE-EN ISO 8467
UNE-EN ISO 7027-1
UNE-EN ISO 10523
+ 3 more
AOAC 995.11
UNE EN ISO 6869
AOAC 985.35
UNE-EN 17298
UNE 77324
ISO 23318
UNE 77325
ISO 10390
UNE 77308
+ 3 more
UNE-EN ISO 663
UNE-EN ISO 662
UNE-EN 16328
UNE-EN 16618
UNE-EN 13368-1
+ 3 more
DIN EN 60335-2-51
DIN EN 60335-2-43
IEC 62054-21
IEC 60335-2-51
DIN EN 60335-2-99
+ 3 more
UNE-EN ISO 140-5
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
UNE-EN ISO 140-7
ISO 2631-2
+ 3 more
UNE-EN 60942
UNE-EN 61672-3
UNE-EN 60804
UNE-EN 60651
UNE-EN 61260-3
+ 3 more
LABORATORIO DE ENSAYOS ACÚSTICOS DE LA E.T.S. DE INGENIEROS INDUSTRIALES DE LA U.P.M.(LABENAC)
Active
UNE-EN ISO 16283-1
UNE-EN ISO 16283-2
UNE-EN ISO 16283-3
UNE-EN ISO 140-7
UNE-EN ISO 140-4
+ 1 more
- 40 ˚C a 85 ˚C > 85 ˚C a 200 ˚C
- 25 ˚C a 85 ˚C
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
+ 1 more
No matching labs found.