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
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NF EN ISO 3745
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UNI EN ISO 3745
🇪🇸
UNE EN ISO 3745
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NEN EN ISO 3745
1,670
Accredited labs
18
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Showing 1,376–1,400 of 1,670 labs
The Auditing Company
Active
#EN ISO 5164:14
# EN 116-97
# ISO 13736
NEN 4400-1
#ISO 6618
(HSG 248) – 2021
03 based on HSG 248)
QOP01 based on HSG 248
(PCM) based on HSG 248
The Testing Lab
Active
DIN EN 933-11
BS EN ISO 17892-1:2014+A1:2022
BS EN ISO 17892-10:2018
BS EN ISO 17892-11:2019
BS EN ISO 17892-2:2014
+ 3 more
Thermo Electron LED
Active
- Gleichspannung
Messgeräte 0,001 V bis
0,33 V bis
3,3 V bis
330 V bis
+ 3 more
Thomas Dudley
Active
BS 1212-2:1990 Clause 4
BS 1212-3:1990 Clause 4
DIN EN 997
Laktoseintoleranz (LCT -14055
BS 1212-4:1991 Clause 4, 13, 14
Masse oder
Konventioneller
Wägewert/
Massenormal *)
> 1 mg
+ 3 more
Railway brake — magnetic track brakes (U
Kraft (WPM)
Länge (WPM)
a) nur Vor-Ort-Kalibrierungen
Vickers hardness test (ISO 6507)
+ 3 more
Total Clean Air
Active
ISO 14644-3
BS EN ISO 14644-2:2015:Part 2
DIN EN 12469
BS EN ISO 14644-1:2015
BS EN ISO 14644-4:2022
+ 3 more
Trescal
Active
- Gleichspannung
/ Messgeräte
10 V; 100 V; 1000 V
> 100 mV
> 0,22 V
+ 3 more
Tru-Cal Metrology
Active
including dial and digital
LENGTH (cont’d)
Plain plug gauges (taper)
ANCILLARY MEASUREMENTS
Plain ring gauges (taper)
+ 3 more
Tyneside Standards
Active
Micrometers
See Notes 3 and 5
See Note 6
Caliper
length bars) – See Note 5
+ 3 more
UNE-EN 60903
UNE-EN IEC 61243-1
UNE-EN 50508
UNE 204001
UNE-EN 61111
+ 2 more
TÜV NORD Mobilität
Active
positiven Überdruck
positiver Überdruck
- Gleichstromstärke
Kraft
Schließ- und
+ 3 more
TÜV NORD Nederland
Active
DIN EN ISO 17232
DIN EN 14960
NEN 3140
#EN ISO 5164:14
EN 1069
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DIN EN 12102-1
DIN EN 12237
DIN EN 13053
DIN EN 13180
TÜV NORD Umweltschutz
Active
DIN ISO 16000-3
DIN ISO 16000-6
DIN ISO 16000-13
DIN ISO 16000-18
DIN ISO 16000-20
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TÜV Rheinland Energy & Environment GmbH Messstelle für Immissionsschutz (Environmental Protection)
Active
DIN CEN/TS 17021 (DIN SPEC 33976)
DIN EN ISO 3745
DIN EN 12102-1
DIN EN 12102-2
DIN 45635-1
+ 3 more
DIN EN 12897
DIN EN 15332
DIN SPEC 1101
DIN EN 303-5
DIN EN 13126-19
+ 3 more
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