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9. Sound Levels
M icrop hon e
1
.4
m
M icrophone
1m
Ceiling
Floor
Low speed airflow
High speed airflow
Medium speed airflow
1).
12000btu/h 18000btu/h
Octave band center frequency
+
Hz
,
So
un
d
pr
es
su
re
le
ve
ld
B
+
0d
B
=
0.
00
02
-
ba
r
,
Audibility limits of
continuous white
sound
Octave band center frequency
+
Hz
,
So
un
d
pr
ess
ur
e
le
ve
ld
B
+
0d
B
=0
.0
00
2
-
ba
r
,
Audibility limits of
continuous white
sound
Ceiling
Floor
Model
H
M
L
H
M
L
YOCA-YOHA 12
YOCA-YOHA 18
YOCA-YOHA 24
YOCA-YOHA 36
YOCA-YOHA 48
YOCA-YOHA 60
43
41
38
46
44
41
43
41
38
46
44
41
45
43
40
48
46
43
45
43
40
48
46
43
47
46
44
49
47
44
47
46
44
49
47
44
Ceiling
Floor
Содержание YOCA-YOHA 12
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