Sper Scientific 840029 Sound Meter Digital - Manual (Page 7)

FREQUENCY WEIGHTING (A and C) CHARACTERISTICS
Frequency dB A dB C Tolerance dB
31.5 -39.4 -3.0 ± 5.0
40 -34.6 -2.0 ± 4.5
50 -30.2 -1.3 ± 4.0
63 -26.2 -0.8 ± 3.5
80 -22.5 -0.5 ± 3.0
100 -19.1 -0.3 ± 2.5
125 -16.1 -0.2 ± 2.0
160 -13.4 -0.1 ± 2.0
200 -10.9 0 ± 2.0
250 -8.6 0 ± 2.0
315 -6.6 0 ± 2.0
400 -4.8 0 ± 2.0
500 -3.2 0 ± 2.0
630 -1.9 0 ± 2.0
800 -0.8 0 ± 2.0
1000 0 0 ± 2.0
1.25k 0.6 0
± 2.0
± 2.5
1.6k 1.0 -0.1
± 3.0
- 2.5
2k 1.2 -0.2
± 3.5
- 3.0
2.5k 1.3 -0.3
± 4.0
- 3.5
3.5k 1.2 -0.5 ± 4.5
4k 1.0 -0.8 - 4.0
5 0.5 -1.3
± 5.0
- 4.5
6.3 -0.1 -2.0
± 5.5
- 5.0
8 -1.1 -3.0
± 6.0
- 5.5
RESPONSE (Fast and Slow) CHARACTERISTICS
Fast Reading is maximum value at 0.2 seconds
Slow Reading is maximum value at 1.5 seconds
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