1
1 - 65
MO DE L :
AC S 71P H
S OUND LE V E L : 39 dB (A)
LOW
HIG H
33 dB (A)
37 dB (A)
C ONDITION
:
MO DE L :
AC S 125P H
S OUND LE V E L : S T R ONG 44 dB (A)
LOW
HIG H
37 dB (A)
41 dB (A)
C ONDITION :
MO DE L :
AC S 100P H
S OUND LE V E L : 42 dB (A)
LOW
HIG H
35 dB (A)
40 dB (A)
C ONDITION
:
NC -20
NC -30
NC -40
NC -50
400063 125 250 800020001000500
60
50
40
30
20
10
NC -20
NC -30
NC -40
NC -50
400063 125 250 800020001000500
60
50
40
30
20
10
NC -20
NC -30
NC -40
NC -50
400063 125 250 800020001000500
60
50
40
30
20
10
S trong
Weak
B oth 50Hz and 60Hz
S T R ONG
S T R ONG
F requency at center of sound pressure band (Hz)F requency at center of sound press ure band (Hz)
F requency at center of sound press ure band (Hz)
Overall
S ound pres s ure level (dB )
(0dB = 0.0002 bar)
Approximate
minimum audible
limit for
continuous nois e
Overall
S ound pres s ure level (dB )
(0dB = 0.0002 bar)
Approximate
minimum audible
limit for
continuous nois e
Overall
S ound pres s ure level (dB )
(0dB = 0.0002 bar)
Approximate
minimum audible
limit for
continuous nois e
1 m from front of outlet at height of 1.5 m1 m from front of outlet at height of 1.5 m
1 m from front of outlet at height of 1.5 m
1-8. Noise Criterion Curves
Ceiling-Mounted Type