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
🇬🇧
BS EN ISO 3745
🇫🇷
NF EN ISO 3745
🇮🇹
UNI EN ISO 3745
🇪🇸
UNE EN ISO 3745
🇳🇱
NEN EN ISO 3745
1,868
Accredited labs
20
Countries
Showing 1,026–1,050 of 1,868 labs
Lambda Calibration
Active
PRESSURE (cont’d)
Distortion Factor
Spot frequency
Phase angle
(Herpes simplex virus type
+ 3 more
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
DIN EN 16174
DIN CEN ISO/TS 16179
DIN EN 15933
DIN ISO 15178
DIN EN 15936
+ 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
(ein- und mehrgängige
zylindrische Außen- und
symmetrischem und
unsymmetrischem Profil)
Außengewinde
+ 3 more
DIN EN 60601-2-4
IEC 60512-4-1
DIN EN 124-2
IEC 60512-4-3
DIN EN 60601-2-44
+ 3 more
Les Préleveurs Indépendants
Active
DIN ISO 17289
ISO 5667-9 (hors échant.
DIN EN ISO 7027-2
NF X 31-615 (Uniquement
DIN EN ISO 10523
+ 3 more
Life Environmental Services
Active
(HSG 248) – 2021
QSOP 01 based on HSG 248
(PCM) based on HSG 248
QSOP 03 based on HSG 248
Aluminium
Blei
Eisen, Kupfer
Ampicillin
Cefepim
+ 3 more
anteile
Kohlenstoffmonoxid
Kohlenstoffdioxid
Methan
Ethan
+ 3 more
accordance with (EN ISO 14644-
BS EN ISO 14644-1:2015
London Borough of Enfield
Active
staining based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
London Laboratories
Active
(HSG 248) – 2021
ASB04 based on HSG 248
(PCM) based on HSG 248
Lucideon
Active
DIN EN 772-13
DIN EN 1052-2
DIN EN 772-20
DIN EN 772-14
DIN EN 1052-4
+ 3 more
Lucion Services
Active
staining based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
3492, ISO14966 and HSG 248
DIN EN 14629
+ 3 more
Ludwig Schneider Messtechnik
Active
Taupunkttemperatur
Fixpunktzellen *)
thermometer (SPRT) *)
meter, direkt anzeigende
thermometer und
+ 3 more
Cryptococcus neoformans
Cardiolipin AK
Escherichia coli K1-AG
Haemophilus influenzae
Metromec Software AG
+ 3 more
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