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
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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 126–150 of 183 labs
8 mT/A ≤ B/I < 500 mT/A
80 mT ≤ B ≤ 1,1 T
0,2 mT ≤ B < 1,1 T
0 mT ≤ B < 80 mT
10 Wb < 0,2 Wb
+ 2 more
CEM DI-021
CEM DI-008
EURAMET CG-10
CEM DI-005
EURAMET CG-6
+ 2 more
3,5 kPa P 70 kPa 70 kPa < P 700 kP
3,5 kPa P 2,0 MPa 2,0 MPa < P 7,0
3,5 kPa P 20 kPa 20 kPa < P 70 kPa
100 kPa P 6,1 MPa 6,1 MPa < P 100
100 kPa P 70 MPa
+ 3 more
nach DIN EN ISO 3650:1999
EURAMET CG-6
ISO 5436-1
CEM DI-013
CEM DI-012
+ 3 more
UNE-EN ISO 10704
UNE-EN ISO 10703
EPA 903.0
EPA 909.0
ISO 13161
+ 3 more
CEM DI-025
CEM DI-018
UNE-EN ISO 21920-3
CEM DI-009
CEM DI-003
+ 3 more
UNE-EN ISO 7887
UNE-EN ISO 17852
UNE-EN ISO 8467
ISO 7150-1
SM 2510 B
+ 3 more
LABORATORIOS EYCO
Active
ISO 5-3
ISO 2813
UNE-EN ISO 9342-1
UNE-EN ISO 8598-1
ISO 3664
+ 3 more
ISO 11290-1
AOAC 991.43
UNE-EN ISO 15216-2
UNE-EN ISO 6579-1
UNE 77324
+ 3 more
LABORATORIOS OMEGA
Active
UNE 10523
UNE 27888
UNE 7027-1
ISO 23695
UNE-EN ISO 9308-1
+ 3 more
SM 2540 F
SM 2540 C
UNE-EN ISO 7027
SM 2520 B
SM 2510 B
+ 3 more
UNE-EN 7027-1
UNE-EN ISO 10523
SM 2520 B
UNE EN 27888
UNE-EN 872
+ 3 more
UNE-EN 12015
UNE-EN 50065-1
UNE-EN IEC 61000-6-4
UNE-EN IEC 61000-6-3
UNE-EN 61000-6-3
+ 3 more
10 · 10-6 mol/mol C 20 · 10-6 mol/mo
10 · 10-6 mol/mol C 5000 · 10-6 mol/
1 · 10-6 mol/mol C 10 · 10-6 mol/mol
1 · 10-6 mol/mol C 5 · 10-6 mol/mol
10 · 10-6 mol/mol C 100 · 10-6 mol/m
+ 3 more
UNE-EN ISO 16283-1
UNE-EN ISO 16283-2
UNE-EN ISO 16283-3
UNE-EN ISO 140-7
UNE-EN ISO 140-4
+ 2 more
MCV
Active
0,005 l/min ≤ Q ≤ 50 l/min
0,5 m3/h≤ Q ≤ 2,8 m3/h
0,6 m3/h Q 2,8 m3/h
20 m3/h Q 30 m3/h
30 m3/h < Q 70 m3/h
+ 3 more
METROCAL CALIBRACIÓN
Active
1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5
5 kg
10 kg 20 kg
100 kg 200 kg 500 kg 1000 kg
1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5
+ 2 more
2 · 10–6 mol/mol C 100 · 10–6 mol/mo
0,1 · 10–2 mol/mol < C 2,5 · 10–2 mol/
1 · 10–6 mol/mol C 100 · 10–6 mol/mo
5 · 10–6 mol/mol C 20 · 10–6 mol/mol
0,15 · 10–2 mol/mol C 20 · 10–2 mol/
+ 3 more
UNE-EN 14385
UNE-EN 15259
UNE-EN 13211
BS ISO 9096:2017
UNE 77216
+ 3 more
UNE-EN ISO 140-5
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
UNE-EN ISO 140-7
UNE-EN ISO 3382-2
+ 2 more
QUACER
Active
UNE-EN ISO 140-5
UNE-EN ISO 16283-3
UNE-EN ISO 16283-2
UNE-EN ISO 140-7
UNE-EN ISO 16283-1
+ 1 more
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