
18
M5HDC-2010
Sound Data
Sound Data
Sound Pressure Level
Ext. Static
(mmAq)
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz
6.5
High 42 39 36 34 28 22 17 38 33
6.0
Medium 41 37 34 31 26 20 15 36 30
3.5
Low 40 36 32 29 23 18 13 34 27
5.5
High 42 41 37 34 31 29 23 40 33
4.0
Medium 41 40 36 33 29 28 22 39 32
3.0
Low 36 35 33 31 26 27 21 36 30
M5CC025CR
Noise
Criteria
Overall
A (dBA)
1/1 Octave A-Weighted Sound Pressure (dBA), ref 20µPa
Model
Speed
M5CC020CR
Microphone position: 1.4m below the centre of the unit. (GB Standard- GB/ D17758)
Tested with 2m length duct at the discharge outlet and air return inlet.
Model Measuring Location
Standard: GB/D 17758
M5CC020CR
M5CC025CR
Test Unit
2m length test duct
2m length test duct
Air
1.4m
Microphone
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