The objective of this Standard is to specify a method for determining the noise emitted to the environment by earthmoving machinery, measured in terms of the A-weighted sound power level while the machine is stationary with the engine operating at the rated speed under no-load conditions.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.4 Machine centre point
3.5 Fan speed
4 Instrumentation
5 Test environment
5.1 General
5.2 Test site and environmental correction, K2A
5.3 Test site
5.3.1 General
5.3.2 Hard reflecting plane
5.3.3 Combination of hard reflecting plane and sand
5.3.4 All-sand plane
5.4 Background noise correction, K1A
5.5 Climatic conditions
6 Measurement of time-averaged A-weighted sound pressure levels
6.1 Size of measurement surface
6.2 Microphone positions on the hemispherical measurement surface
6.3 Positioning the machine
6.3.1 All machines, except those with slewing upper structure
6.3.2 Machines with slewing upper structure
6.4 Measurement time
7 Setting-up and operation of machinery
7.1 General
7.1.1 Safety and operation
7.1.2 Machine set-up
7.1.3 Machine operation conditions
7.2 Engine speed
7.3 Fan speed
8 Determination of A-weighted sound power level
8.1 Measurement procedure
8.2 Calculation of A-weighted sound power level
8.3 Determination of measurement result
9 Information to be recorded
10 Information to be reported
10.1 Information
10.2 Declaration of sound emission data and uncertainty
Annex A
A.1 Dozer
A.1.1 Crawler dozer
A.1.2 Wheeled dozer
A.2 Loader
A.2.1 Wheeled loader
A.2.2 Compact loader, wheeled
A.2.3 Crawler loader
A.2.4 Skid steer loader
A.3 Backhoe loader
A.3.1 Wheeled backhoe loader
A.3.2 Crawler backhoe loader
A.4 Excavators
A.4.1 Wheeled excavator
A.4.2 Crawler excavator
A.4.3 Compact excavator
A.4.4 Walking excavator
A.5 Dumper
A.5.1 Wheeled rigid-frame dumper
A.5.2 Articulated-frame dumper
A.5.3 Crawler dumper
A.5.4 Compact dumper, wheeled
A.5.5 Compact dumper, crawler
A.6 Scraper
A.6.1 Scraper with one engine
A.6.2 Scraper with two engines
A.6.2.1 Positioning of the machine and measurement
A.6.2.2 Calculation to combine the time-averaged A-weighted sound pressure levels of the two engines
