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 126–150 of 1,670 labs
Cyclosporin A
Everolimus
FK 506 (Tacrolimus)
Sirolimus
6-Methylmercaptopurin
+ 3 more
Fra(X)-Syndrom, FXTAS (FMR1)
Friedreich Ataxie (FXN)
DRPLA (ATN1)
Huntington Krankheit (HTT)
Huntington-like (TBP, JPH3)
+ 3 more
Aldosteron
11-Desoxycorticosteron
11-Desoxycortisol
17-Hydroxypregnenolon
17-Hydroxyprogesteron
+ 3 more
Amentum Clean Energy
Active
OM H-3 based on ISO 9698:2019
ISO 9696:2017 and ISO
(HSG 248) – 2021
(PCM) based on HSG 248
staining based on HSG 248.
UK
Active
a) BS 7270:2006
b) BS 3518-3:1963 (Withdrawn)
ASTM E1820-18ae1 (Withdrawn)
ISO 6892-2
BS EN ISO 204
+ 2 more
Anchem Laboratories
Active
(HSG 248) – 2021
ANC/AS/2 based on HSG 248
DIN EN 14791
IEC 60519-11
DIN EN 13284-1
+ 3 more
Andersen Caledonia
Active
requirements of HTM 01-06 Part E
35 °C/3 days based on HTM 2030
Part E, WHTM 01-06 Part E & BS EN
ISO 15883-4 using R2A and
Part E, HTM 0106 Part E, WHTM 01-
+ 3 more
Apex Acoustics
Active
BS EN ISO 16283-1:2014+A1:2017BS EN ISO
BS EN ISO 16283-2:2020
HTM 08-01 - 2013
BS EN ISO 140-4:1998
BS EN ISO 717-2:2020
+ 2 more
Applus Netherlands
Active
DIN EN 16407-1
BS EN ISO 10675-1
ÖNORM EN ISO 17636-1
NEN-EN 12732
ÖNORM EN ISO 17636-2
+ 3 more
DIN EN ISO 6507-1
DIN EN ISO 6508-1
NF T90-111
EN 13087-2
DIN EN 10325
+ 3 more
DIN EN ISO 6508-1
NF T90-111
EN 13087-2
ISO 15705
DIN EN ISO 10523
+ 3 more
As-Wägetechnik
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
1) In den CMC sind die erweiterten Messu
nichtselbsttätige
+ 2 more
Asbestos Analytical Services
Active
(HSG 248) – 2021
LSD.ASB.02 based on HSG 248
LSD.ASB.04 based on HSG 248
(PCM) based on HSG 248
No matching labs found.