1 - 220
OA
2. SOUND LEVELS
YKB/YLM 2nd
MEE15K022
2. SOUND LEVELS
2-1. Measurement Condition
2-2. NC curves
<Ceiling recessed type>
Supply/
Exhaust air
Main unit
To indoor unit
Measurement site:
A
B
1.5 m
1.5 m
Mitsubishi Electric Co.,
Nakatsugawa Works
Anechoic chamber
GUF-50RDH
4
/50RD
4
Outlet
(Measurement point B)
GUF-100RDH
4
/100RD
4
Directly below
(Measurement point A)
GUF-100RDH
4
/100RD
4
Outlet
(Measurement point B)
GUF-50RDH
4
/50RD
4
Directly below
(Measurement point A)
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
Octave band sound level (dB)
Octave band central frequency (Hz)
Octave band sound level (dB)
Octave band central frequency (Hz)
Overall
62.5
125
250
500
1K
2K
4K
8K
Overall
62.5
125
250
500
1K
2K
4K
8K
Octave band sound level (dB)
Octave band central frequency (Hz)
Octave band sound level (dB)
Octave band central frequency (Hz)
Overall
62.5
125
250
500
1K
2K
4K
8K
Overall
62.5
125
250
500
1K
2K
4K
8K
