77.. SSound D
ound Data
ata
Duct S
Sound Pressure level
Unit: dB(A)
2)
CNH24HDB (AC024BNHDCH/AA)
•
NC Curve
1) CNH18HDB (AC018BNHDCH/AA)
3)
CNH30HDB (AC030BNHDCH/AA)
4)
CNH36HDB (AC036BNHDCH/AA)
NOTE
•
Specifications may be subject to change without prior notice.
- Sound pressure level is obtained in an anechoic room.
- Sound pressure level is a relative value, depending on the distance and acoustic environment.
- Sound pressure level may differ depending on operation condition.
- dBA = A weighted sound pressure level
-
Reference acoustic pressure 0 dB = 20μPa
Model
High
Mid
CNH18HDB (AC018BNHDCH/AA)
40
36
Low
32
CNH24HDB (AC024BNHDCH/AA)
2m
2m
Suction
Discharge
Duct
Duct
Microphone
41
37
33
CNH30HDB (AC030BNHDCH/AA)
CNH36HDB (AC036BNHDCH/AA)
41
37
33
43
39
35
60
55
60
60
55
60
NC 60
NC 60
55
55
NC 55
NC 55
50
High
45
50
50
High
45
50
NC 50
NC 50
45
45
Mid
NC 45
40
35
Low
30
25
20
15
10
40
Mid
35
Low
NC 45
40
40
NC 40
NC 40
35
35
NC 35
NC 35
30
30
25
20
15
10
30
NC 30
NC 30
25
25
NC 25
20
NC 25
20
NC 20
15
NC 20
15
NC 15
10
NC 15
10
Hearing threshold
5
0
5
Hearing threshold
5
0
5
0
63
125
250
500
1000
Octave Band Center Frequency(Hz)
2000
4000
8000
0
63
125
250
500
1000
Octave Band Center Frequency(Hz)
2000
4000
8000
So
un
d
Pr
es
su
re
L
ev
el
(d
B)
So
un
d
Pr
es
su
re
L
ev
el
(d
B)