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
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NEN EN ISO 9614-1
1,868
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WTLAB
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IEC 62109-1
IEC 61400-21-1
IEC 62109-2
DIN EN 60598-2-4
DIN EN 60068-2-30
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Waagen-Dienst Kirste
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Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
elektronische Waagen
verwendete Abkürzungen:
1) In den CMC sind die erweiterten Messu
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Waagen-Jöhnk
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Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
verwendete Abkürzungen:
Waagen-Kissling
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
Radiated emissions (CISPR 32)
verwendete Abkürzungen:
Waagenfachhandel Hilke
Active
Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
elektronische Waagen
verwendete Abkürzungen:
Wagner Umweltgeologie
Active
DIN EN ISO 5667-1 (A 4) *
DIN 38402-A 12 *
DIN 38402-A 13 *
DIN EN ISO 5667-3 (A 21) *
DIN 38402-A 30 *
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EN 13501-2
DIN 51363-2
BS 1363-1
BS 476: Part 21:1987 Section 5
ISO 834:1975:Sections 5, 6, 7
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DIN EN 2561
DIN EN ISO 14126
DIN EN ISO 14125
DIN EN 2563
DIN 53504
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DIN 45645-2
DIN EN ISO 11690-1
DIN EN ISO 11690-2
Steuerungssoftware Messvolumen mit einer
Werth Messtechnik ≤ 2330 mm
GmbH, Gießen, D
Werth Messtechnik ≤ 600 mm
Werth Messtechnik ≤ 150 mm
Wessex Power Technology
Active
TEMPERATURE
controllers, and recorders)
RELATIVE HUMIDITY
DIN IEC 60060-1
VDE 0432- 1
IEC 60270
VDE 0434
DIN EN 61243-1
+ 3 more
Kohlenstoffmonoxid *)
Kohlenstoffdioxid
Propan *)
Stickstoffmonoxid
Distickstoffmonoxid
+ 3 more
Analysts’ Guide (HSG 248)
(PCM) based on HSG 248
staining based on HSG 248
(HSG 248) – 2021
SOP 12 based on HSG 248
(PCM) based on HSG 248
SOP 11 based on HSG 248
Westward Laboratories
Active
ISO 21528-2
BS ISO 4832:2006
BS ISO 16649-2:2001
Method No 2.9 based on BS EN ISO
Method No 2.12 based on BS EN
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White Lab srl - Labostudio
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ISO 10195
DIN EN ISO 11641
DIN EN ISO 3377-1
DIN EN ISO 11642
DIN EN ISO 17228
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ISO 13720
DIN 3388-4
EPA 6020
EPA 3535
DIN EN ISO 6888-1
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Wil-Test Solutions
Active
BS 1377-2:2022
BS 1377-9:1990
DIN EN 1097-5
BS EN ISO 17892-1:2014+A1:2022
purposes (BS 1377-2:2022
Winkhaus (UK)
Active
DIN EN 12046-2
DIN EN 12094-8
DIN EN 949
BS 6375-2:2009
DIN EN 950
+ 3 more
Wishart Group (NI)
Active
TIME INTERVAL
Betriebsübertragungsmaß
TEMPERATURE
ROTATION SPEED
DIN EN ISO 16911-1
DIN EN 14789
DIN EN 14790
DIN EN 13725:2003-07 und Berichtigung
AG2 and IS EN 15259:2007
+ 1 more
Wocken Industriepartner
Active
Parallelendmaße aus 0,5 mm
DIN EN ISO 3650:1999
Einstelldorne
Durchmesser 3 mm
Durchmesser 5 mm
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Wood Group UK
Active
IEC 61400-12-1
IEC 61400-12-3
IEC 61400-50
IEC 61400-12
IEC 61400-50-2
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Charpy impact test (ISO 148-1)
nichtselbsttätigen
elektronischen
Ersatzlastverfahren
(Staffelverfahren)
+ 1 more
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