BS 4773-2:1989
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Methods for testing and rating air terminal devices for air distribution systems Acoustic testing
Hardcopy , PDF
15-03-1999
English
29-09-1989
National foreword
Committees responsible
Method
0 Introduction
1 Scope and field of application
2 References
3 Definitions
4 Acoustical test facilities and procedures
5 Installation and operation of equipment to be
tested
6 Auxiliary facilities
7 Measurements and calculations
8 Information to be reported
Figures
1 Location of equipment in test room
2 Mounting detail for air terminal device installed
on or against a surface
3 Mounting detail for equipment installed at
intersection of two surfaces
4 Mounting detail for air terminal device installed
away from surface
5 Mounting detail for air control device installed
outside room boundary
6 Mounting detail for air control device to
determine casing radiated sound
7a) Examples of LW and LWA plotted against lg qv for an
assembly with constant total pressure loss
coefficient
7b) Examples of LW and LWA plotted against lg delta pt
with constant flow rate
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