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
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1A CAL
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- Gleichspannung
Josephson-Josephson
Multimeter
Quellen > 0,2 V
Spannungsnormale
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cartridges, based on HTM 2030
9.201 to 9.212 and BS EN ISO
35 °C/3 days based on HTM 2030
section 9.201 to 9.212, BS EN
ISO 15883-1:2009 6.4.2.3 and
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3-Rath Kalibrier+Prüftechnik
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Sound intensity — scanning method (ISO 9
Härteprüfmaschinen
Knoop- und
70 HR15N
42 HR30N
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Münchingen, D
CAM 2, Software von
Holos, Software von Carl
Metrologic, Software
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(HSG 248) – 2021
E203 based on HSG 248
(PCM) based on HSG 248
E200 based on HSG 248
E201 based ISO 14966:2019 using
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Laterale Größe von
Tiefenmaß/
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DIN ISO 1817
ISO 4045
DIN EN ISO 20347
ISO 17697
ISO 4643
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A.Q.C. SRL
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ASTM E 415 21
DIN EN 10164
DIN EN ISO 3651-1
ASTM A 262-15
ASTM G48-11
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Kraft 0,5 N
Zug- und Druckkraft
Vibration measuring instruments — requir
Sound power — in-situ using reference so
20 kN
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-95 kPa ≤ P < -1 kPa -1 kPa ≤ P < -100 P
5 kPa ≤ P < 80 kPa 80 kPa ≤ P ≤ 120 kPa
0 MPa ≤ P ≤ 2 MPa 2 MPa < P ≤ 20 MPa 20
Punto triple del agua (0,01 °C)
Punto de fusión del hielo (0,00 °C) -80
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A2L ENVIRONNEMENT
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NF X 43-269
NF X 43-264
DIN EN ISO 16017-2
NF X 43-257
NF X 43-267
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Environmental noise — determination of s
UNE-EN ISO 3744
UNE-EN ISO 3746
UNE-EN ISO 11200
UNE-EN ISO 11201
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AB-EIC CONTROL REGLAMENTARIO
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UNE-EN ISO 16283-2
UNE-EN ISO 16283-1
UNE-EN ISO 16283-3
Absolutdruck p
abs
positiver Überdruck
Positiver Überdruck p e
Überdruck p
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ABIT Ingenieure Trautmann
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DIN ISO 8297
DIN 45645-1
DIN 45645-2
DIN 45680 Beiblatt 1
ISO 11338-2
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ABIT Ingenieure Trautmann
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BS EN ISO 16283-1:2014+A1:2017BS EN ISO
ISO 10052
BS EN ISO 16283-2:2020
DIN EN ISO 16283-3
DIN 4109-4
ABLE Calibration Services
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TEMPERATURE
PRESSURE
AC VOLTAGE (continued)
DC VOLTAGE
Generation only
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ABP Associates
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staining based on HSG 248
QP23 based on HSG 248
(PCM) based on HSG 248
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