BS 5944-1:1992
Current
The latest, up-to-date edition.
Measurement of airborne noise from hydraulic fluid power systems and components Method of test for pumps
Hardcopy , PDF
English
12-15-1992
Committees responsible
National foreword
Introduction
Method
1 Scope
2 Normative references
3 Definitions
4 Measurement uncertainty
5 Test environment
6 Instrumentation
7 Installation conditions
8 Operation conditions
9 Location and number of sound measurement points
10 Test procedure
11 Information to be recorded
12 Test report
13 Identification statement (Reference to this part of
ISO 4412)
Annexes
A Calculation of sound levels
B Errors and classes of measurement
C Guidelines for the application of this part of ISO
4412
D Bibliography
Tables
1 Standard deviation of sound power level
determinations
2 Allowable variations of mean indicated values of
controlled parameters
B.1 Permissible systematic errors of measuring
instruments as determined during calibration
Figures
C.1 Transmission paths of sound energy from pumps
C.2 Instrumentation for manual data logging
C.3 Multiple microphone scanning instrumentation
C.4 Corrections for background noise
C.5 Pump noise test configuration with hemispherical
measuring array
C.6 Mounting and driveline arrangement for
hemispherical measuring array
C.7 "Minimized" pump mount (two-bolt flange mounting
configuration)
C.8 Diagrammatic views of the hemispherical layout
showing fluid line cladding
C.9 Example of test circuit
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