Daikin FTV-A Series - Page 63

61
Sound Level
Sound Pressure Level
Model Speed
1/1 Octave A-weighted Sound Pressure Level (dB, ref 20µPa)
Overall
(dBA)
Noise
Criteria
125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz
FTV50A
High
44 41 38 37 34 28 18 42 36
Med
40 39 35 34 30 23 14 38 33
Low
37 36 32 30 26 19 13 35 29
Quiet
35 33 30 28 23 16 12 33 26
NC Curve
0
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8K
NC-40
NC-50
NC-60
NC-30
NC-20
NC-70
NC-40
NC-50
NC-60
NC-30
NC-20
NC-70
NC-40
NC-50
NC-60
NC-30
NC-20
NC-70
A
PPROXIMATE
T
HRESHOLD HEARING FOR
C
ONTINUOUS NOISE
QUIET (Q)
LOW (L)
MEDIUM (M)
HIGH (H)
OCTAVE BAND CENTER FREQUENCY (Hz
)
3D122801