4-3. NOISE CRITERION CURVES
PUHZ-SHW80VAA.UK
PUHZ-SHW80YAA.UK
PUHZ-SHW80VAA-BS.UK
PUHZ-SHW80YAA-BS.UK
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
48
SPL(dB)
45
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
49
SPL(dB)
47
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
45
SPL(dB)
43
LINE
1.5 m
1 m
MICROPHONE
UNIT
GROUND
PUHZ-SHW112VAA.UK PUHZ-SHW112YAA.UK
PUHZ-SHW112VAA-BS.UK PUHZ-SHW112YAA-BS.UK
PUHZ-SW100VAA.UK PUHZ-SW100YAA.UK
PUHZ-SW100VAA-BS.UK PUHZ-SW100YAA-BS.UK
PUHZ-SW75VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW75YAA-BS.UK