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I-78
SM831148
1. Specifications
1-8 Noise Criterion Curves
Ceiling Mounted Type
MODEL : TH2672R, THH2672R
SOUND LEVEL : HIGH 40 dB(A), NC 34
LOW 36 dB(A), NC 26
CONDITION :
Distance 3.3 ft., Under the unit 3.3 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002
bar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-20
NC-40
NC-50
NC-30
1221_X_I
MODEL : TH3672R, THH3672R
SOUND LEVEL : HIGH 46 dB(A), NC 39
LOW 37 dB(A), NC 31
CONDITION :
Distance 3.3 ft., Under the unit 3.3 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
MODEL : TH4272R
SOUND LEVEL : HIGH 47 dB(A), NC 40
LOW 38 dB(A), NC 32
CONDITION :
Distance 3.3 ft., Under the unit 3.3 ft.
SOURCE : 208 - 230 V, 1 Phase, 60 Hz
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002
bar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-40
NC-50
NC-30
2113_X_I
NC-20
2114_X_I
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002
bar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-40
NC-50
NC-30
NC-20