AS 2991.2-1991

1 - AS 2991.2-1991 ACOUSTICS - METHOD FOR THE DETERMINATION OF AIRBORNE NOISE EMITTED BY HOUSEHOLD AND SIMILAR ELECTRICAL APPLIAN
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 REFERENCED DOCUMENTS
6 - 1.4 DEFINITIONS
6 - 1.4.1 Rated capacity
6 - 1.4.2 Place setting and serving pieces
6 - 1.4.3 Main wash
6 - 1.4.4 Main clean rinse
7 - SECTION 2 MEASUREMENT METHODS AND ACOUSTICAL ENVIRONMENTS
7 - 2.1 GENERAL
7 - SECTION 3 INSTRUMENTATION
7 - 3.1 GENERAL REQUIREMENTS FOR INSTRUMENTATION FOR MEASURING ACOUSTICAL DATA
7 - 3.2 SPECIFIC REQUIREMENTS FOR SUPPLEMENTARY INSTRUMENTATION FOR MEASURING ACOUSTICAL DATA
7 - 3.2.1 Level recorder
7 - 3.2.2 Third-octave band analysis
7 - 3.3 SUPPLEMENTARY INSTRUMENTATION
8 - SECTION 4 OPERATION AND LOCATION OF APPLIANCE UNDER TEST
8 - 4.1 EQUIPPING AND PRE-CONDITIONING OF APPLIANCES
8 - 4.2 SUPPLY OF ELECTRIC ENERGY AND WATER
8 - 4.4 LOADING AND OPERATING OF APPLIANCES
8 - 4.4.1 Standard test loading for noise measurements
8 - 4.4.2 Standard test programme or cycles for noise measurements
8 - 4.4.3 Determination of rating cycles
8 - 4.5 LOCATION AND MOUNTING OF APPLIANCES
8 - 4.5.1 Floor-standi ng appliances
9 - 4.5.2 Wall-mounted appliances
9 - 4.5.3 Built-in appliances
10 - SECTION 5 MEASUREMENT OF NOISE LEVELS
10 - 5.2 MICROPHONE ARRAY AND MEASUREMENT SURFACE FOR ESSENTIALLY FREE-FIELD CONDITIONS OVER A REFLECTING PLANE
10 - 5.2.2 Floor-standing free-standing appliances
10 - 5.2.3 Floor-standing or counter type appliances placed against the wall
10 - 5.2.4 Floor-standing cabinet-type appliance
10 - 5.2.5 to 5.2.8. Not applicable
10 - 5.2.9 Wall mounted appliances
10 - 5.6 SOUND PRESSURE LEVEL MEASUREMENTS
10 - SECTION 7 INFORMATION TO BE RECORDED
10 - 7.6 EQUIPMENT AND PRECONDITIONING OF APPLIANCE UNDER TEST
10 - 7.7 ELECTRIC SUPPLY, WATER SUPPLY, ETC
10 - 7.12 RESULTS OF MEASUREMENTS
11 - APPENDIX A - GUIDELINES FOR THE DESIGN OF SIMPLE TEST ROOMS WITH ESSENTIALLY FREE FIELD CONDITIONS.
12 - APPENDIX B - GUIDELINES FOR THE DETERMINATION OF EQUIVALENT CONTINUOUS A-WEIGHTED SOUND POWER LEVELS
12 - B1 GENERAL
12 - B2 DEFINITIONS
12 - B2.1 Equivalent continuous A-weighted sound pressure level (L)
12 - B2.2 Equivalent continuous A-weighted sound power level (L)
12 - B2.3 Maximum A-weighted sound power level
12 - B3 DETERMINATION OF EQUIVALENT CONTINUOUS A- WEIGHTED SOUND POWER LEVEL
12 - B3.1 General
12 - B3.2 Calculation of equivalent sound power level(s) from measurements under free-field conditions
12 - B3.3 Calculation of equivalent continuous sound power level(s) from measurements in a special reverberment test room
13 - B4 DATA TO BE RECORDED
14 - APPENDIX C - TEST ENCLOSURE

Sets out objective methods of engineering accuracy for determining sound power levels of airborne noise emitted by dishwashers within the specified frequency range of interest.

This Standard sets out objective methods of engineering accuracy (engineering method, grade 2 according to ISO 2204 with the requirement that time dependence of the level during the period of observation be recorded) described in AS 1217.4 and AS 1217.5 for determining sound power levels of airborne noise emitted by dishwashers within the specified frequency range of interest.This Standard does not cover methods for determining sound power levels with greater precision (precision method, grade 1 according to ISO 2204) specified in AS 1217.2, AS 1217.3, and AS 1217.6.This Standard applies to single unit electric dishwashers for household and similar use.

First published as AS 2991.2-1991.