Svantek SV 200A, User Manual

Page: 197 / 198

197 SV 200A User Manual
Ln Ln is calculated for: T
d
= 0, T
e
= 0, T
n
≠ 0.
( ) ( )








+ =

n
T
2
0 W
n
dt p t r
T
1
log 0 1 dB 10 Ln
Lde Lde is calculated for: T
d
≠ 0,
T
e
≠ 0,
T
n
= 0.
( )




 + 
+
=
10 Le 10 Ld
10 4 10 12
4 12
1
log 10 Lde
Len Len is calculated for: T
d
= 0, T
e
≠ 0,
T
n
≠ 0.
( )




 + 
+
=
10 Ln 10 Le
10 8 10 4
8 4
1
log 10 Len
Lnd Lnd is calculated for: T
d
≠ 0,
T
e
= 0, T
n
≠ 0. ( )




 + 
+
=
10 Ld 10 Ln
10 12 10 8
12 8
1
log 10 Lnd
Lden Lden is calculated for: T
d
≠ 0,
T
e
≠ 0,
T
n
≠ 0.
( )




 +  + 
+ +
=
10 Ln 10 Le 10 Ld
10 8 10 4 10 12
4 8 12
1
log 10 Lden
LEPd
12.4.1.1
12.4.1.2
Daily Personal Noise Exposure is the noise
exposure level for a nominal 8-hour working
day. The
LEPd result is calculated on the
base of the LEQ
h 8
T
T
log 10 Leq LEPd
e
+ =
Ltm3
and
Ltm5 The Ltm3 and Ltm5 results (Takt-Maximal Levels) are calculated according to the
German standard TA Lärm.
Lnn
12.4.1.3
12.4.1.4
Statistical level is the certain boundary level
surpassed by the temporary noise level
values in not more than
n% of the observation
period
Example: Let us assume that L35
is equal to 76.8 dB. It means that
during
the measurements the
noise level 76.8 dB was exceeded
in
not more than 35%
of the observation period.