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  • BSI
    BS 5944-2:1992, ISO 4412-2:1991 Measurement of airborne noise from hydraulic fluid power systems and components - Method of test for motors
    Edition: 1992
    $435.35
    / user per year

Description of BS 5944-2:1992 1992

This part of ISO 4412 establishes a test code describing procedures, based on ISO 2204, for the determination of the sound power levels of a hydraulic fluid power motor, under controlled conditions of installation and operation, suitable for providing a basis for comparing the noise levels of motors in terms of:

  • A-weighted sound power level;
  • octave band sound power levels.

From these sound power levels, if required, reference sound pressure levels may be calculated for reporting purposes in accordance with Annex A.

For general purposes, the frequency range of interest includes the octave bands with centre frequencies between 125 Hz and 8 000 Hz.1)

Due to the inherent difficulties in the measurement of low-speed motor performance, this part of ISO 4412 is limited to motors operating at speeds exceeding 50 r/min.

Guidelines for the application of this part of ISO 4412 are given in Annex C.

This part of ISO 4412 is applicable to all types of hydraulic fluid power motors operating under steady-state conditions, irrespective of size, except for any limitations imposed by the size of the test environment (see clause 5).



Standard NumberBS 5944-2:1992, ISO 4412-2:1991
TitleMeasurement of airborne noise from hydraulic fluid power systems and components - Method of test for motors
StatusUnder Review
Publication Date1992-12-15
ReplacesBS 5944-3:1980, BS 5944-2:1980, BS 5944-1:1980
Identical National Standard OfISO 4412-2:1991
DescriptorsHydraulic equipment, Position, Hydraulic motors, Test equipment, Errors, Standard deviation, Sound intensity, Acoustic measurement, Hydraulic transmission systems, Grades (quality), Testing conditions, Error correction, Acoustic testing, Noise (environmental)
ICS17.140.20 Noise emitted by machines and equipment, 23.100.10 Pumps and motors
CommitteeMCE/18
ISBN0 580 21396 X
PublisherBSI
Pages24

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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