Scope
ISO 3746:2010
Sound Power Level — Survey Method
This test determines sound power levels of noise sources using an enveloping measurement surface and sound pressure level measurements. It is a survey-grade method suitable for field measurements of machinery, equipment, and industrial sources in moderately reflective environments. The method is widely used for noise compliance verification, product development, and environmental impact assessments. Accredited testing ensures consistent, defensible results for regulatory compliance and product labeling. This method bridges the gap between laboratory-grade precision and practical field measurements.
What it measures
- Sound power level (Lw) in decibels
- A-weighted and frequency-weighted sound power
- Directional sound power distribution
- Acoustic performance of noise sources
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DIN EN ISO 3744
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BS EN ISO 3744
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NF EN ISO 3744
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UNI EN ISO 3744
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UNE EN ISO 3744
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NEN EN ISO 3744
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DIN EN ISO 3745
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BS EN ISO 3745
🇫🇷
NF EN ISO 3745
🇮🇹
UNI EN ISO 3745
🇪🇸
UNE EN ISO 3745
🇳🇱
NEN EN ISO 3745
1,670
Accredited labs
18
Countries
Showing 1,301–1,325 of 1,670 labs
Verschlußzeit Kollagen/ADP
Kollagen/Epinephrin
Basophile Granulozyten
Eosinophile Granulozyten
Erythrozyten
+ 3 more
Verschlußzeit Kollagen/ADP
Kollagen/Epinephrin
Basophile Granulozyten
Eosinophile Granulozyten
Erythrozyten
+ 3 more
Spectra Analysis Services
Active
QOP01 based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
(HSG 264, 2012)
Appendix 5 of HSG 227 (2004))
AM01 based on BS EN ISO 4833-1:
AM03 based on BS EN ISO 11290-
AM05 based on BS ISO 21528-2:
AM08 based on BS EN ISO 15213-2:2023 by
AM12 based on BS EN
+ 3 more
Spratt & Hamer
Active
BS EN ISO 140-4:1998
ISO 13829
BS EN ISO 717-2:2020
ISO 1407
BS EN ISO 9972:2015
+ 1 more
Springfields Fuels
Active
LMM2149, ASTM E112-13 by
ISO 6507-1
LMM2207, ASTM E112-13 by
LMM1862, ASTM E112-13 for
to BS EN ISO 6507-1:2018
+ 3 more
FM003 based on ISO 6888-
FM004 based on ISO 16649-2:2001
FM006 based on ISO 6579-1:2017+Amd 1:202
FM009 based on ISO 11290-1:2017
2) WM005 based on ISO 9308-2:2012 using
+ 1 more
DIN EN 772-16
BS EN ISO 10545-2:2018
DIN EN 1344
DIN EN 12953-8
DIN EN 16510-2-4
+ 3 more
Kraft
Vibration measuring instruments — requir
Sound power — survey method (ISO 3746)
1 kN
Railway brake — automatic variable load
+ 3 more
Großes Blutbild
Kleines Blutbild
Erythrozyten
Hämoglobin
Hämatokrit
+ 3 more
ISO 7171
ISO 1407
BS EN ISO 140-4:1998
BS EN ISO 717-2:2020
Lehrdorne
Durchmesser 1 mm
Lehrringe
Prüfstifte
Messschieber für 0 mm
+ 3 more
Stroma Built Environment
Active
DIN EN 12094-8
BS EN ISO 717-2:2020
DIN EN 950
BS EN ISO 10077-2:2017
ISO 16000-3
+ 3 more
Studenroth Präzisionstechnik
Active
− Parallelendmaße
− Durchmesser
− Längenmessmittel
Railway brake — magnetic track brakes (U
− Längenmessgeräte
+ 3 more
WBC (Leukozyten)
RBC (Erythrocyten)
HGB (Hb)
HCT (Hk)
PLT (Thrombozyten)
+ 3 more
Suchy Messtechnik
Active
Druck 50 mbar
Absolutdruck Pabs
> 1,3 bar
> 2,5 bar
> 0,6 bar
+ 3 more
Surrey County Council
Active
DIN EN 933-11
DIN EN 1097-6
DIN EN 1097-1
DIN EN 1097-2
DIN EN 933-3
+ 3 more
SysKal
Active
Hexagon Metrology Raumdiagonale von
GmbH, Wetzlar, D ≤ 1500 mm
Polyworks, Software von
InnovMetric, Lindau, D
PowerINSPECT, Software
+ 3 more
NF T90-111
DIN EN ISO 17294-2
DIN EN ISO 14403-2
DIN EN ISO 11357-3
DIN EN ISO 10304-1
+ 3 more
ISO 5-3
ISO 12647-1
ISO 13655
ISO 3074
DIN EN ISO 1833-4
DIN EN ISO 1833-5
DIN EN ISO 1833-6
DIN EN ISO 1833-7
+ 3 more
DIN EN 12457-2
EPA 3545
DIN EN ISO 14402
UNI 10802
EPA 1613
+ 3 more
No matching labs found.