Noise Criterion Curves - Mitsubishi Electric Mr. SLIM PKA Series Service Manual

5

NOISE CRITERION CURVES

5-1. SOUND LEVELS
Measurement location
Note: Measured in anechoic room.
5-2. NOISE CRITERION CURVES
PKA-M60KA2(-ER/-ET).TH
PKA-M60KAL2(-ER/-ET).TH
PKA-M71KA2(-ER/-ET).TH
PKA-M71KAL2(-ER/-ET).TH
External static pressure : 0Pa
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
Approximate minimum
audible limit on
15.0
continuous noise
10.0
63 125 250 500
Octave band center frequencies (Hz)
TCH069A
1.0 m
High
Low
NC-60
NC-50
NC-40
NC-30
NC-20
1k 2k 4k 8k
Sound level at anechoic room : Low-Middle-High
Models
PKA-M60/71KA(L)
PKA-M100KA(L)
PKA-M100KA2(-ER/-ET).TH
PKA-M100KAL2(-ER/-ET).TH
External static pressure : 0Pa
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
Approximate minimum
audible limit on
15.0
continuous noise
10.0
63 125 250
Octave band center frequencies (Hz)
10
Sound level dB (A)
39 - 42 - 45
41 - 45 - 49
High
Low
500 1k 2k 4k 8k
NC-60
NC-50
NC-40
NC-30
NC-20