TG20 SERIES DIGITAL SEISMIC GEOPHONE


 

Specification (at 22 )
Type
TG20-3
TG20-4.5
TG20-8
TG20-10
TG20-14
TG20-28
TG20-40
TG20-60
TG20-100
precision
Natural Frequency (HZ)
3
4.5
8
10
14
28
40
60
100
5%
Damping with shunt resistor
0.7
0.75
(8.2K)
0.7
(1K)
0.7
(1K)
0.5
(1K)
0.56
(1K)
0.576
(1.5K)
0.6
(1K)
0.68
(1.5K)
5%
Sensitivity with shunt resistor V/M/S
27
23.5
(8.2K)
23
(1K)
20
(1K)
20
(1K)
28
(1K)
30.4
(1.5K)
22
(1K)
32.5
(1.5K)
5%
Harmonic distortion %
<0.2
Coil resistor
395
575
560
820
5%
Coil Resistance
395
377
283
520
360
530
5%
Moving mass g
11
8.2
7
7.6
/
Typical case to coil motion p-p mm
1.5(p-p)
/
Allowable tilt
10
20
90
/
Spurious frequency HZ
>100
>180
>200
>250
>350
>380
>600
>800
/
Operating temperature
\40 + 90
/
Unit diameter mm
25.4
27.0
/
Unit height mm
33.5
/
Unit mass g
87
100
95
100
100
/
Life warranty (years)
1
3
2
/

Characteristics






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