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
🇫🇷
NF EN ISO 3746
🇮🇹
UNI EN ISO 3746
🇪🇸
UNE EN ISO 3746
🇳🇱
NEN EN ISO 3746
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DIN EN ISO 9614-1
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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 1,576–1,600 of 1,670 labs
Vintec Laboratories
Active
(HSG 248) – 2021
(PCM) based on HSG 248
P052 based on HSG 248
Vistec Electron Beam
Active
− Permanentes Laboratorium
Positionen und Abstände
gleichgerichteter Kanten
positionen von Strukturen
(Hartschichtmasken)
+ 3 more
WENZEL Metrology
Active
Koordinatenmessgeräte
von <7000 mm
under-Edge, UK
INCA3D, Software von
Inspect 3D, Cholet, F
+ 3 more
UNE 73109
IEC 60780 (1998)
UNE 73109 (2001)
ISO 28218
ISO 27048
WIKA Alexander Wiegand SE &
Active
Positiver und −1 bar bis −0,03 bar
Positiver und negativer
(ein- oder mehrgängige
> −0,03 bar bis
> 0,15 bar bis
+ 3 more
WIN Messmittel und Service
Active
− Parallelendmaße
− Längenmessmittel
− Durchmesser
− Formabweichung
− Gewinde
+ 3 more
IEC 61400-12
IEC 61400-12-1
IEC 61400-12-2
IEC 61400-12-3
IEC 61400-12-5
+ 3 more
WINDTEST Grevenbroich
Active
IEC 61400-12-1
IEC 61400-12-2
IEC 61400-12-3
IEC 61400-12-5
IEC 61400-12-6
+ 3 more
WSP UK
Active
(HSG 248) – 2021
AFC based on HSG 248
(PCM) based on HSG 248
SSA based on HSG 248
WTLAB
Active
IEC 62109-1
IEC 61400-21-1
IEC 62109-2
DIN EN 60598-2-4
DIN EN 60068-2-30
+ 3 more
Waagen-Dienst Kirste
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
elektronische Waagen
verwendete Abkürzungen:
1) In den CMC sind die erweiterten Messu
+ 2 more
Waagen-Jöhnk
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
verwendete Abkürzungen:
Waagen-Kissling
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
verwendete Abkürzungen:
Waagenfachhandel Hilke
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
elektronische Waagen
verwendete Abkürzungen:
EN 13501-2
DIN 51363-2
BS 1363-1
BS 476: Part 21:1987 Section 5
ISO 834:1975:Sections 5, 6, 7
+ 3 more
WIWeB
Active
DIN EN 2561
DIN EN ISO 14126
DIN EN ISO 14125
DIN EN 2563
DIN 53504
+ 3 more
DIN 45645-2
DIN EN ISO 11690-1
DIN EN ISO 11690-2
Wessex Power Technology
Active
TEMPERATURE
controllers, and recorders)
RELATIVE HUMIDITY
DIN IEC 60060-1
VDE 0432- 1
IEC 60270
VDE 0434
DIN EN 61243-1
+ 3 more
Kohlenstoffmonoxid *)
Kohlenstoffdioxid
Propan *)
Stickstoffmonoxid
Distickstoffmonoxid
+ 3 more
Analysts’ Guide (HSG 248)
(PCM) based on HSG 248
staining based on HSG 248
(HSG 248) – 2021
SOP 12 based on HSG 248
(PCM) based on HSG 248
SOP 11 based on HSG 248
Westward Laboratories
Active
ISO 21528-2
BS ISO 4832:2006
BS ISO 16649-2:2001
Method No 2.9 based on BS EN ISO
Method No 2.12 based on BS EN
+ 3 more
ISO 13720
DIN 3388-4
EPA 6020
EPA 3535
DIN EN ISO 6888-1
+ 3 more
No matching labs found.