BS 5944-2-1992 Measurement of airborne noise from hydraulic fluid power systems and components. Method of test for motors
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652D92B47860470B9EDDE10028E1317F |
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文件大小(MB)： |
1.23 |
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页数： |
28 |
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日期： |
2024-6-23 |
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BRITISH STANDARD BS 5944 :,Part 2 : 1992,ISO 4412-2 :,1991,Measurement of,airborne noise from,hydraulic fluid power,systems and components,Part 2. Method of test for motors,UDC 621,225 : 534.6,\( I (1(l\ A\Y W rriKH T WR1TTKX I?KinilSSK)\ I'Rn.M BS1 STANDARDS,BS 5944 : P^rt 2 : 1992,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Machinery and,Components Standards Policy Committee (MCE/-) to Technical Committee,MCE/18, upon which the following bodies were represented:,Advanced Manufacturing Ibchnology Research Institute,Association of British Mining Equipment Companies,Bath University,British Compressed Air Society,British Fluid Power Association,British Steel Industry,Department of Trade and Industry (National Engineering Laboratory),Ministry of Defence,The following bodies were also represented in the drafting of the standard,through subcommittees and panels:,British Hydromechanics Research Association,British Railways Board,Society of Motor Manufacturers and Traders Ltd.,This British Standard, having,been prepared under the,direction of the Machinery and,Components Standards Policy,Committee, was published,under the authority of the,Standards Board and comes into,effect on,15 December 1992,. BSI1992,First published November 1980,Second edition December 1992,The following BSI references,relate to the work on this,standard:,Committee reference MCE/18,Draft for comment 89/78172DC,ISBN 0 580 21396 X,Amendments issued since publication,Amd. No. Date Text affected,BS 5944 : F^rt 2 : 1992,Contents,Page,Committees responsible Inside front cover,National foreword ii,Introduction iv,Method,1 Scope 1,2 Normative references 1,3 Definitions 2,4 Measurement uncertainty 2,5 たst environment 2,6 Instrumentation 3,7 Installation conditions 3,8 Operating conditions 3,9 Location and number of sound measurement points 4,10 Ibst procedure 4,11 Information to be recorded 4,12 Ibst report 6,13 Identification statement (Reference to this part of ISO 4412) 6,Annexes,A Calculation of sound levels 7,B Errors and classes of measurement 8,C Guidelines for the application of this part of ISO 4412 9,D Bibliography 20,Tkbles,1 Standard deviation of sound power level determinations 2,2 Allowable variations of mean indicated values of controlled,parameters 3,B.l Permissible systematic errors of measuring instruments as determined,during calibration 8,Figures,C.l Transmission paths of sound energy from motors 9,C.2 Instrumentation for manual data logging 10,C.3 Multiple microphone scanning instrumentation 11,C.4 Corrections for background noise 12,C.5 Motor noise test configuration with hemispherical measuring array 13,C.6 Mounting and driveline arrangement for hemispherical measurement 14,C.7 ''Minimized'' motor mount (two-bolt flange mounting configuration) 15,C.8 Diagrammatic view of the hemispherical layout showing fluid line,cladding 16,C-9 Example of test circuit 18,i,BS 5944: Part 2 : 1992,National foreword,This Part of BS 5944 has been prepared under the direction of the Machinery and,Components Standards Policy Committee. It is identical with ISO 4412-2 : 1991,Hydraulic fluid power - Tbst code for determination of airborne noise levels —,Part 2: Motors, published by the International Organization for Standardization,(ISO).,On publication of BS 5944 : Part 1 : 1992 and Part 2 : 1992, the 1980 editions of,BS 5944 : Parts 1, 2 and 3 will be withdrawn.,BS 5944 comprises the following Parts.,Part 1 Method of test for pumps,Part 2 Method of test for motors,Part 3 Withdrawn,Part 4 Method qf determining sound power levelsfrom valves controlling,flow and pressure,Piart 5 Simplified method qf determining sound power levels from,pumps using an anechoic chamber,Part 6 Method qf test for pumps using parallelepiped microphone array,For the purposes of the British Standard the identification statement required by,clause 13 may be replaced by the following:,( Airborne noise levels determined in accordance with BS 5944 : Part 2,Cross-references,International standard Corresponding British Standard,ISO 3019-2 : 1986 BS 6276 : 1987 Specification for dimensions and,identification code for mounting flanges and shaft ends,for hydraulic fluid power pumps and motors,(Technically equivalent),ISO 3488 : 1975 BS 4231 : 1982 Classification for viscosity grades of,industrial liquid lubricants,(Identical),BS 4196 Sound power levels of noise sources,ISO 3744 : 1981 Part 4 : 1981 Engineering methods for determination of,sound power levelsfor sources infree jield conditions,over a reflecting plane,(Identical),ISO 3745 : 1977 Pfeirt 5 : 1981 Precision methods for deter……
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