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
1,868
Accredited labs
20
Countries
Showing 126–150 of 254 labs
INOVALYS - Site de Tours
Active
DIN EN ISO 17294-2
DIN EN ISO 14403-2
NF EN ISO 7887 –
NF T 90-412
DIN EN ISO 7899-1
+ 3 more
INOVALYS - Site de Vannes
Active
NF V08-106
DIN EN ISO 17294-2
DIN EN ISO 21528-2
ISO 19343
NF T90-105-2
+ 3 more
INSTITUT MECASEM
Active
(BS EN ISO 6892-1: 2019)
ASTM E8/E 8M
DIN EN 10002-1
ASTM E8 et E8M
DIN EN 2002-001
+ 3 more
INTERTEK France
Active
DIN EN ISO 1833-6
DIN EN ISO 1833-2
DIN EN ISO 1833-7
DIN EN ISO 1833-1
DIN EN ISO 1833-20
+ 3 more
ITGA NORMANDIE
Active
NF X43-050 (parties utiles de
ISO 22262-1
NF X 43-050
NF X 43-269 - Annexe K
DIN EN ISO 14419
DIN EN ISO 14045
DIN EN ISO 3071
DIN EN ISO 13934-1
NF EN 14325 (2004) – norme annulée
+ 3 more
ISO 22262-1
NF X 43-050
NF X43-050 (parties utiles de la
ISO 22262-1
NF X 43-050
NF X 43-269 –
NF X43-050 (parties
ISO 22262-1
NF X 43-050
NF X 43-269 –
NF X43-050 (parties utiles de
NF X 43-269
DIN EN ISO 16017-1
NF X 43-007
NF X 46-032
NF X 43-298
+ 3 more
NF X 43-269
DIN EN ISO 16017-1
NF X 43-007
NF X 43-298
NF X43-050 (parties utiles de
+ 3 more
NF X 43-269
DIN EN ISO 16017-1
NF X 43-298
NF X 46-032
ISO 22262-1
+ 3 more
NF X 43-269
DIN EN ISO 16017-1
NF X43-269 – Annexe
NF X 43-007
NF X 43-298
+ 3 more
NF X 43-269
NF X 43-007
NF X 46-032
NF X 43-014
NF X 43-259
+ 3 more
NF X 43-269
EN 13087-2
DIN EN ISO 16017-1
NF X 43-007
DIN EN ISO 16017-2
+ 3 more
LAB-EXPERT
Active
NF X43-050 (parties utiles de la
NF X 43-050
NF ISO 22262-1 (parties utiles
LABOCEA - Site de Brest
Active
DIN EN 13346
CEN / TS 14235
NF T 90-412
DIN EN ISO 7899-1
DIN EN 12880
+ 3 more
LABOCEA - Site de Ploufragan
Active
NF U47-210
NF U47-036-1
NF U47-108
NF U47-100
NF U47-107
+ 3 more
LABOCEA - Site de Quimper
Active
DIN EN ISO 21528-1
DIN EN ISO 21528-2
DIN EN ISO 10304-1
DIN EN ISO 6888-2
NF V08-054
+ 3 more
ISO 5815-1
DIN ISO 15923-1
EN 13087-2
DIN EN ISO 7887
DIN EN ISO 13395
+ 3 more
DIN EN ISO 14403-2
NF T 90-412
DIN EN ISO 7899-1
NF EN ISO 7887 – méthode C
ISO 5815-1
+ 3 more
DIN EN ISO 17294-2
DIN EN ISO 14403-2
DIN EN ISO 10304-1
NF-T 90-101
NF T90-015-1
+ 3 more
No matching labs found.