GB/T 17483-1998Test code for the determination of airborne noise level of hydraulic pumps (English PDF)

Foreword

This Standard equivalently adopts international standard ISO 4412-1.1991 Hydraulic

Fluid Power; Test Code for Determination of Airborne Noise Levels - Part 1.Pumps.

This Standard's technical content remains unchanged with ISO 4412-1.1991, while its

narration is different from ISO 4412-1.1991.Since the referenced standard describes

the acoustic test methods and instruments in details, thus some guidance appendix in

ISO 4412-1.1991 shall not be used in this Standard. For ease of use, the calculation

of A-weighted average sound pressure level and sound power level are additionally

described in details. The terminology, quantity, quantifier name, and symbols adopted

by this Standard are consistent with GB/T 3947-1996 Acoustical terminology, GB/T

3102.7-1993 Quantities and Units-Acoustics, and other relevant national acoustic

provisions.

This Standard's Appendixes A, B, C, D are standard appendixes.

This Standard was proposed by the Ministry of Machine-Building Industry.

This Standard shall be under the jurisdiction of National Hydraulic Pneumatic

Standardization Technical Committee.

Drafting organizations of this Standard. Ministry of Machine-Building Industry of

Guangzhou Machine Tools Institute.

Chief drafting staff of this Standard. Min Xinhe.

This Standard shall be responsibly interpreted by Guangzhou Machine Tools Institute

of Ministry of Machine-Building Industry.

Test Code for the Determination of

Airborne Noise Level of Hydraulic Pumps

1 Scope

This Standard specifies, under the steady state conditions, the test code for the

determination of airborne noise level of hydraulic pumps (hereinafter refers to pumps).

This Standard is applicable to measurement pump's A-weighted sound power level,

pump octave band (center frequency is 125~8000Hz) sound power level.

2 Normative References

The following standards contain the provisions which, through reference in this

Standard, constitute the provisions of this Standard. At the time of publication, the

editions indicated are valid. All standards are subject to revision. The parties who are

using this Standard shall explore the possibility of using the latest version of the

following standards.

GB/T 3767-1996 Acoustics - Determination of Sound Power Levels of Noise

Sources Using Sound Pressure - Engineering Method in an Essentially Free Field

over a Reflecting Plane

GB 3785-83 Electric, Sonic Properties and Measuring Methods for Sound Level

Meters

GB/T 3947-1996 Acoustical Terminology

GB 6882-86 Acoustics-Determination of Sound Power Levels of Noise

Sources-Precision Methods for Anechoic and Semi-Anechoic Rooms

JB/T 7861-1995 1/1 and 1/3 Octave Band Filters for the Analysis of Sounds and

Vibrations

3 Definitions

This Standard adopts the following definitions and the ones stipulated in GB/T 3927.