Sound Pressure Level - Mitsubishi Electric PEA-RP200WKA Service Manual

5
SOUND PRESSURE LEVELS

5-1. Sound pressure level

Ceiling concealed
5-2. NC curves
PEA-RP200WKA
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
Approximate minimum
10.0
audible limit on
continuous noise
5.0
0.0
63 125 250
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
Approximate minimum
10.0
audible limit on
continuous noise
5.0
0.0
63 125 250
1m
Inlet
easurement point
(External static pressure 60 Pa)
High Low
Middle
500 1k 2k 4k
Octave band center frequencies (Hz)
(External static pressure 100 Pa)
High Low
Middle
500 1k 2k 4k
Octave band center frequencies (Hz)
2m
Outlet
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
NC-20
15.0
Approximate minimum
10.0
audible limit on
continuous noise
5.0
0.0
8k 63 125 250
70.0
65.0
60.0
NC-60
55.0
50.0
NC-50
45.0
40.0
NC-40
35.0
30.0
NC-30
25.0
20.0
NC-20
15.0
Approximate minimum
10.0
audible limit on
continuous noise
5.0
0.0
8k 63 125 250
10
(External static pressure 75 Pa)
High Low
Middle
500 1k 2k 4k
Octave band center frequencies (Hz)
(External static pressure 150 Pa)
High Low
Middle
500 1k 2k 4k
Octave band center frequencies (Hz)
NC-60
NC-50
NC-40
NC-30
NC-20
8k
NC-60
NC-50
NC-40
NC-30
NC-20
8k