Noise Criterion Curves - Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual

5-3. NOISE CRITERION CURVES

MICROPHONE
1.5m
PUHZ-RP3VHA
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUHZ-RP5VHA
PUHZ-RP6VHA
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
1m
SPL(dB)
MODE LINE
COOLING 47
HEATING 48
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MODE SPL(dB) LINE
COOLING 50
HEATING 52
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
GROUND
PUHZ-RP4VHA
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
11
SPL(dB)
MODE
COOLING
HEATING
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
LINE
49
50
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000