Svantek SV 973 User Manual

SVAN 973 User Manual – Appendixes
201
L(A/C/Z)peak
Peak sound level expressed in dB, for
frequency weightings A, C, Z, symbols are
LApeak, LCpeak and LZpeak. Peak sound
level is calculated for the given T.
( )








=
2
0
2
W
p
tp
maxlog10Peak
T
L(A/C/Z)(S/F/I)
max
The highest time weighted sound level (Max)
expressed in dB, within a stated time interval,
for frequency weightings A, C, Z and time
weightings F, S, I symbols are LAFmax,
LASmax, LCFmax, LCSmax etc.
( )








=

2
0
2
W
p
tp
maxlog10Max
T
L(A/C/Z)(S/F/I)
min
The lowest time weighted sound level (Min)
expressed in dB, within a stated time interval,
for frequency weightings A, C, Z and time
weightings F, S, I symbols are LAFmin,
LASmin, LCFmin, LCSmin etc.
( )








=

2
0
2
W
p
tp
minlog10Min
T
L(A/C/Z)(S/F/I)
Time weighted sound level expressed at
observation time, expressed in dB, for
frequency weightings A, C, Z and time
weightings F, S, I symbols are LAF, LAS,
LCF, LCS etc.
( )








=

2
0
2
W
p
tp
log10L
L(A/C/Z)eq
Time averaged equivalent continuous sound
level (Leq) expressed in dB, for frequency
weightings A, C, Z symbols are LAeq, LCeq
and LZeq. In principle time weighting is not
involved in a determination of time averaged
sound level. Time-averaged sound level is
calculated for current time period of the
measurement (T).
( )
( )








=

T
0
2
0
dtptr
T
1
log10Leq
L(A/C/Z)E
Sound Exposure Level (SEL) expressed in
dB, for frequency weightings A, C, Z,
symbols are LAE, LCE and LZE. SEL is
essentially the subset of the Leq result. Its
value is equal to the Leq result referred to the
integration time equal to one second (so, for
the Integration time equal to 1 s, SEL is
always equal to Leq).
( )
( )
s1
T
log10Leqdtptrlog10SEL
T
0
2
0
+=








=

L(den)
Only one result from: Lday, Leve, Lnight, Lde, Len, Lnd, and Lden is available in the
instrument. It depends on the day and night time in which the measurement was
performed. Day and night time depend on the <Day Time Limits> option (6h-18h or 7h-
19h).

Svantek SV 973 Specifications

General

Brand	Svantek
Model	SV 973
Category	Measuring Instruments
Language	English