BRUEL & KJAER 2230 - Noise Dose Evaluation Method

SEL - Leq dB
Measurement
Duration
830403
Fig. 3.8. Determination of elapsed time
The exact value would be:
SEL- Leq(dB)
Time(s)=10 10
41min52s
3.5.9. Noise Dose Evaluation
The
noise dose percentage for a range of "Allowed 8 hours Leq" values is easily obtai-
ned from the SEL measurement using the nomogram given in Fig.3.9. The SEL value is
indicated directly by the 2230.
Allowed 8 hours
Leq -value
80 dB
B5
/
/
/
/
90
/
/
/
/
Noise dose in % of
max . allowable dose
/
/
/
BOO /
400 /
/
200
/
100%
0
40
/
/
/
/
SEL-value
dB
/
/
/
Fig. 3.9. Noise dose determination
135
130
125
120
115
110
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