Sound Levels; Measurement Condition; Nc Curves - Mitsubishi Electric CITY MULTI PEFY-P22VMS-E-S Data Book

2. SOUND LEVELS

2-1. Measurement Condition

2. SOUND LEVELS
Measurement site:
Mitsubishi Electric Co.,
Nakatsugawa Works
Anechoic chamber

2-2. NC curves

GUF-50RDH
3
Directly below
(Measurement point A)
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
Overall 62.5 125 250 500 1K
Octave band central frequency (Hz)
<Ceiling recessed type>
GUF-50RDH
3
Outlet
(Measurement point B)
90
85
80
75
70
NC-70
65
60
NC-60
55
50
NC-50
45
40
NC-40
35
30
NC-30
25
20
NC-20
15
NC-10
10
2K 4K 8K Overall 62.5
Octave band central frequency (Hz)
INDOOR UNITS
Supply/
Exhaust air
NC-70
NC-60
NC-50
NC-40
NC-30
NC-10
125 250 500 1K 2K 4K 8K
To indoor unit
Main unit
1.5 m
A
C7-R Rev.
1.5 m
B
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