CESVA SC-30, User Manual, Page: 71 / 76

SC-30
User’s Manual
69
8.7 Technical specifications.
The technical features of the measurement parameters are according with chapter 5 of this
manual
8.7.1 Standards
Standards
IEC 60804:00 type 1, IEC 60651:01 type 1
DIRECTIVE 2003/10/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of
6 February de 2003 on the minimum health and safety requirements regarding the
exposure of workers to the risks arising from physical agents (noise)
8.8 Functions definitions
8.8.1 Daily noise exposure level
L
EX,8h
Daily noise exposure level normalized to 8 hours, with frequency weighting
A.
) lg( 10
0 8 ,
T t L L
At h EX
+ =
L
At
: Equivalent continuous sound pressure level with frequency
weighting A corresponding to the measurement time
t: Measurement time
T
0
: Normalization time (8 Hours)
8.8.2 Sound exposure
E Sound exposure, time integral of the instantaneous squared sound
pressure over a specified measurement time, expressed in Pa
2
·h.








⋅ = ∫
dt t p E
t
A
) (
0
2
p
A
(t): Instantaneous sound pressure with frequency weighting A
8.8.3 Dose
DOSE Relantionship between the energy of the measurement interval and the
maximum energy allowed due to the criterion level L
c
for 8 hours.
Expressed as a percentage (%).
( )
10
8 ,
10
c h EX
L L
DOSE
−
=
L
EX,8h
: Daily noise exposure level (dBA).
L
C
: Criterion level (dBA).