TG4S Series Super Seismic Geophone


TG4S Series Super Seismic Geophone was developed to meet the needs of high resolution operations of telemetering seismic data acquisition system with 24 bits resolution. With features of wide frequency-band, high aliasing, low distortion, rational damping coefficient, higher resolution and lowest time and phase variation, it can improve resolution of exploration and accuracy of data.

Features
1. Margin tolerance of all specifications is within 2.5%
2. Broad frequency-band is from 10Hz to 250Hz
3. Typical spurious frequency is over 250Hz, which applies to requirement of 1ms sampling
4. Distortion is less than 0.1%.



Specification (at 20 )
Parameter/Type
TG4S-8
TG4S-10
TG4S-14
TG4S-28
TG4S-35
TG4S-40
Natural Frequency (Hz)
82.5%
102.5%
142.5%
282.5%
352.5%
402.5%
Open Circuit Damping
0.337
0.271
0.200
0.6002.5%
0.6002.5%
0.6812.5%
Damping Coefficient
0.62.5%
(2400)
0.62.5%
(1400)
0.62.5%
(640)
/
/
/
Sensitivity (V/m/s)
28.82.5%
28.82.5%
28.82.5%
31.02.5%
32.52.5%
34.02.5%
Coil resistance ()
3752.5%
3752.5%
3752.5%
3852.5%
5602.5%
6622.5%
Distortion
< 0.1%
Spurious Frequency (Hz)
250
250
300
400
500
500
Moving mass (g)
11.3
11.3
11.6
10.2
9.3
9.3
Maximum coil excursion p. p (mm)
2.0
2.0
2.0
1.6
1.8
1.8
Diameter (mm)
25.4
26.0
Height (mm)
32.0
Warranty Period (year)
3 (geophone element)
Operating Temperature
\40 + 100

Characteristics


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