Scope
ISO 3746:2010
Sound Power Level โ 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
๐ฌ๐ง
BS EN ISO 3745
๐ซ๐ท
NF EN ISO 3745
๐ฎ๐น
UNI EN ISO 3745
๐ช๐ธ
UNE EN ISO 3745
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NEN EN ISO 3745
1,868
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Chamois Metrology
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Calibration of pressure
Gas pressure (gauge)
Gas Pressure (Differential)
common mode pressure of 3.5
Hydraulic pressure (gauge)
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Liquid-in-glass thermometers
ASTM D4052 (Digital density
Cirrus Research
Active
Sound Calibrators
Sound Level Meters
One-third octave band filters
(HSG 248) โ 2021
SRV-002 based on HSG 248
(PCM) based on HSG 248
CoMech Metrology
Active
Chronic progressive external
Depth
Internal
Dial gauges and dial test
Caliper
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simulation.
parameters and ranges)
digital and analogue
Compli Group
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DC CURRENT
DC Resistance
Oscilloscope Calibration
DC VOLTAGE
CAPACITANCE
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BS EN ISO 16283-1:2014+A1:2017BS EN ISO
BS EN ISO 16283-2:2020
HTM 08-01 - 2013
BS EN ISO 140-4:1998
BS EN ISO 717-2:2020
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DIN EN 933-11
DIN EN 12390-3
DIN EN 933-3
DIN EN 12390-7
DIN EN 12697-5
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DC CURRENT
LENGTH
DC Resistance
DC VOLTAGE
Cold junction compensation
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Corserv Solutions
Active
DIN EN 933-1
(PCM) based on HSG 248
(HSG 248) โ 2021
DIN EN 932-1
DIN EN 932-2
+ 3 more
requirements of BS EN 15259:2007
IEC 60519-11
Based on EN 14791:2017
DIN EN 13284-1
BS EN BS EN ISO 21877:2019
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Gas pressure (absolute)
Gas pressure (gauge)
Hydraulic pressure (gauge)
Hydraulic Pressure (absolute)
PRESSURE (contโd)
+ 1 more
DM Calibration
Active
LENGTH
Blade type
Straight edges
Surface plates
External micrometer
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DNKA
Active
staining based on HSG 248.
(PCM) based on HSG 248
(HSG 248) โ 2021
QSOP 03 based on HSG 248
QSOP 01 based on HSG 248
Decus Research
Active
1) MS08P based on BS EN ISO
MS02P based on BS EN ISO
MS03P based on BS EN ISO
MS06P based on BS EN ISO
MF07P based on BS EN ISO
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Devonport Royal Dockyard
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Specific Values 1 ๏
RF Power
RF Attenuation 10 MHz to 1 GHz
Other values -20 dBm to +20 dBm
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