Copyright ©Sigicom AB 2018
31
A.3 Linear operating range (sinusoidal signals)
Standard
Level Range
and Frequency
weighting
31.5Hz
lower/
upper
1kHz
lower/
upper
4kHz
lower/
upper
8kHz
lower/
upper
12.5kHz
lower/
upper
Peak
pres-
sure
[Pa]
S01,S11
20 - 95 dBA
20/57
20/96
20/97
20/95
20/92
1.7
S02,S12
30 – 105 dBA
30/67
30/106
30/107
30/105
30/102
5.6
S03,S13
40 - 115 dBA
40/77
40/116
40/117
40/115
40/112
20
S04,S14
55 - 130 dBA
55/92
55/131
55/132
55/130
55/127
100
S09
60 - 130 dBA
60/92
60/131
60/132
60/130
60/127
100
S05,S15
25 - 95 dBC
25/93
25/96
25/96
25/95
25/92
1.7
S06,S16
30 - 105 dBC
30/103
30/106
30/106
30/105
30/102
5.6
S07,S17
40 - 115 dBC
40/113
40/116
40/116
40/115
40/112
20
S08,S18
55 - 130 dBC
55/128
55/131
55/131
55/129
55/127
100
S10
60 - 130 dBC
60/128
60/131
60/131
60/129
60/127
100
Standard
Level Range
and Frequency
weighting
1Hz
lower/
upper
5Hz
lower/
upper
10Hz
lower/
upper
20Hz
lower/
upper
100Hz
lower/
upper
Peak
pres-
sure
[Pa]
S22
40 – 114 dBG
40/62
40/93
40/105
40/115
40/61
5.6
S23
50 - 124 dBG
50/72
50/104
50/116
50/125
50/71
20
S24
65 - 139 dBG
65/83
65/119
65/131
65/140
65/86
100
For a signal with crest factor of 10, the upper linear range will be
limited by 17dB.
The S51 is designed to measure sound pressure levels up to 131 dBA
or dBC at 1 kHz in its least sensible range (or 140 dBG at 20Hz).
A.4 Microphone
•
Type:
Prepolarized ½ “condenser
•
Dynamic range:
16 to 146 dB
•
Maximum pressure:
146 Pa
•
Temperature range:
-40 to +120 ºC
(-0.01dB/ºC within -10 to +55 ºC)
•
Humidity range:
0 to 100% RH (not condensing)
•
Humidity influence
@ 250Hz
: <0.1 dB (0 to 100% RH)
•
Static-pressure coefficient @ 250H/25ºC: -0.011 dB/kPa
