Sound Pressure Levels; Pfav-P250Vm-E 1234; Pfav-P500Vm-E 1450 - Mitsubishi Electric PFAV-P250VM-E Data Book

5. Sound Pressure Levels

•PFAV-P250VM-E
Power sorce : 3N 380/400/415V 50/60Hz
90
80
70
60
50
40
30
20
·Approximate minimum
audible limit on
continuous noise.
10
63 125
·
OCTAVE BAND CENTER FREQUENCIES (Hz)
Note:The measuring point is the 1m from the bottom of the unit.
(1m from the front of the unit.)
•PFAV-P500VM-E
Power sorce : 3N 380/400/415V 50/60Hz
90
80
70
60
50
40
30
20
·Approximate minimum
audible limit on
continuous noise.
10
63 125
·
OCTAVE BAND CENTER FREQUENCIES (Hz)
Note:The measuring point is the 1m from the bottom of the unit.
(1m from the front of the unit.)
50Hz, 60Hz
NC Curve
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
250 500 1000 2000 4000 8000
50Hz, 60Hz
NC Curve
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
250 500 1000 2000 4000 8000
1m
Measurement
location
63Hz 125Hz 250Hz
50Hz 68 63 59
60Hz 66 63 58.5
1m
Measurement
location
63Hz 125Hz 250Hz
50Hz 73.5 65 56.5
60Hz
77.5 69 60
18
500Hz 1000Hz 2000Hz 4000Hz
50 46.5 45.5 36
51 47.5 44 38.5
500Hz 1000Hz 2000Hz 4000Hz
56 53 49 41.5
57.5 57 54 46.5
8000Hz dB(A)
32 55
32 55
8000Hz dB(A)
33 59
38 62