I.S. EN 25135:1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS OF NOISE FROM AIR TERMINAL DEVICES, HIGH/LOW VELOCITY/PRESSURE ASSEMBLIES, DAMPERS AND VALVES BY MEASUREMENT IN A REVERBERATION ROOM
16-04-1999
12-01-2013
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Provides general rules for the acoustic testing of air terminal devices, high/low velocity/pressure assemblies and dampers and valves used in air diffusion and air distribution systems as defined in IS0 3258 in order to determine sound power levels as defined in IS0 3740. Applies to equipment operating under steady state conditions.
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