11
1.5m
1m
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
PUHZ-RP60VHA
PUHZ-RP71VHA
COOLING
MODE
HEATING
47
SPL(dB)
48
LINE
5-3. NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP100VHA
PUHZ-RP100YHA
COOLING
MODE
HEATING
49
SPL(dB)
51
LINE
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUHZ-RP125VHA
PUHZ-RP140VHA
PUHZ-RP125YHA
PUHZ-RP140YHA
COOLING
MODE
HEATING
50
SPL(dB)
52
LINE
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
µ
bar)
BAND CENTER FREQUENCIES, Hz
PUHZ-RP35VHA
PUHZ-RP50VHA
COOLING
MODE
HEATING
44
SPL(dB)
46
LINE
OC334-1.qxp 05.5.26 6:09 PM Page 11
