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
🇮🇹
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
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UNI EN ISO 9614-1
🇪🇸
UNE EN ISO 9614-1
🇳🇱
NEN EN ISO 9614-1
1,670
Accredited labs
18
Countries
Showing 876–900 of 1,670 labs
DIN EN ISO 21528-2
DIN EN ISO 6888-2
DIN ISO 16649-2
DIN ISO 11665-4
NF T90-007
+ 3 more
NF T 90-412
DIN EN ISO 7899-1
NF U47-101
DIN EN ISO 10523
NF T90-015-2
+ 3 more
DIN EN ISO 14403-2
DIN EN ISO 13395
DIN EN ISO 10304-1
DIN EN ISO 15061
ISO 5815-1
+ 3 more
Laboratoire d'Analyses de Surveillance et d'Expertise de la Marine (LASEM) - Base Navale de Brest
Active
DIN EN ISO 17294-2
NF T 90-412
VDE 414-9-11
DIN EN ISO 10304-1
DIN EN ISO 9698
+ 3 more
DIN EN ISO 17294-2
NF T 90-412
DIN EN ISO 7899-1
DIN EN ISO 10304-1
ISO 5815-1
+ 3 more
DIN EN 27888
NF T 90-412
DIN EN ISO 7393-2
DIN EN 26461-2
DIN EN ISO 10523
+ 3 more
DIN EN ISO 17294-2
DIN EN ISO 7899-1
VDE 414-9-11
DIN EN ISO 10304-1
DIN EN ISO 10523
+ 3 more
DIN EN 17126
DIN EN 14562
DIN EN 14348
IEC 60127-5
DIN EN 14563
+ 3 more
DIN ISO 11665-4
DIN 53483-2
DIN EN ISO 7937
NF V08-050
NF V 08-060
+ 3 more
ISO 12846
ISO 11348-3
DIN EN 12457-2
ISO 9377-2
ISO 19250
+ 3 more
UNI 13649
EPA 6010
DIN EN 12880
DIN EN 13284-1
UNI 9432
+ 3 more
Basophile Granulozyten
Eosinophile Granulozyten
Erythrozyten
Hämatokrit
Leukozyten
+ 3 more
Laborgemeinschaft Köln
Active
Liste aller Untersuchungsverfahren im fl
Webpräsenz des Medizinischen Laboratoriu
HbA1c
Basophile
Basophile absolut
+ 3 more
Laborgemeinschaft Odenwald
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HbA1c
Großes Blutbild
Kleines Blutbild
Retikulocyten
Natriumchlorid
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Laborärzte Sindelfingen
Active
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Willibrand Faktors
a-Hydroxy-Alprazolam
Amilsulprid
7-amino-Flunitrazepam
+ 3 more
Lambda Calibration
Active
PRESSURE (cont’d)
Distortion Factor
Spot frequency
Phase angle
(Herpes simplex virus type
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Lambeth Scientific Services
Active
(HSG 248) – 2021
(PCM) based on HSG 248
P-12 based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
ISO 12966-2
F06 6 & F06 5 based on BS EN
F05 4 based on BS 770:Part
+ 3 more
GPT
GOT
GGT
Salmonellen
Shigellen
+ 3 more
Latzke Härteprüfung
Active
Kraft (WPM)
Kraftmesseinrichtungen von
Werkstoffprüfmaschinen
nach DIN 51220 *
Acoustics — tonality assessment (DIN 456
+ 3 more
Leadec BV &
Active
Gleichspannung 33 mV
Messgeräte 0,33 V
330 V
Gleichstromstärke 33 µA
Messgeräte 0,33 mA
+ 3 more
Leftfield Environmental
Active
(HSG 248) – 2021
LSOP6 based on HSG 248
(PCM) based on HSG 248
No matching labs found.