Mitsubishi PU36EK3

8
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
SPL(dB) LINE
56
PU42EK2 PU42EK7
PU42EK21 PU42EK71
PU42EK72
3.3ft
3.3ft
MICROPHONE UNIT
GROUND
OC247-E--1.qxp 04.8.11 4:25 PM Page 8