4
4
- 44
3-WAY FLOW LOGIC Unit Specifications
MODEL
: ST-NKFL 7, ST-NKFL 9,
ST-NKFL 12, ST-NKFL 18
SOUND LEVEL :
31 dB(A)
LOW
HIGH
27 dB(A)
29 dB(A)
CONDITION
:
MODEL
: ST-NKFL 24
SOUND LEVEL :
34 dB(A)
LOW
HIGH
28 dB(A)
31 dB(A)
CONDITION
:
MODEL
: ST-NKFL 36
SOUND LEVEL :
39 dB(A)
LOW
HIGH
33 dB(A)
36 dB(A)
CONDITION
:
MODEL
: ST-NKFL 48
SOUND LEVEL :
42 dB(A)
LOW
HIGH
34 dB(A)
38 dB(A)
CONDITION
:
MODEL
: ST-NKFL 60
SOUND LEVEL :
44 dB(A)
LOW
HIGH
36 dB(A)
40 dB(A)
CONDITION
:
NC-20
NC-30
NC-40
NC-50
4000
63
125 250
8000
2000
1000
500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
4000
63
125 250
8000
2000
1000
500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
4000
63
125 250
8000
2000
1000
500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
4000
63
125 250
8000
2000
1000
500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
4000
63
125 250
8000
2000
1000
500
60
50
40
30
20
10
Strong
Weak
STRONG
STRONG
STRONG
STRONG
STRONG
Both 50Hz and 60Hz
Sound pressure le
v
el (dB)
Overall
Overall
(0dB = 0.0002
μ
bar)
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Overall
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Overall
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Overall
Sound pressure le
v
el (dB)
(0dB = 0.0002
μ
bar)
Approximate
minimum audible
limit for
continuous noise
Approximate
minimum audible
limit for
continuous noise
Approximate
minimum audible
limit for
continuous noise
Approximate
minimum audible
limit for
continuous noise
Approximate
minimum audible
limit for
continuous noise
1.5 m directly below unit
1.5 m directly below unit
1.5 m directly below unit
1.5 m directly below unit
1.5 m directly below unit
2. 4-Way Air Discharge Semi-concealed Type
2-4. Noise Criterion Curves
ST-NFKL
04-218 Airwell-4_2&3.qxp 01/06/2007 13:20 Page 44