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£º
1. Margin
tolerance of all specifications is within ¡À2.5%
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 ¡æ)
|
Parameter/Type
|
TG4S-8
|
TG4S-10
|
TG4S-14
|
TG4S-28
|
TG4S-35
|
TG4S-40
|
Natural
Frequency (Hz)
|
8¡À2.5%
|
10¡À2.5%
|
14¡À2.5%
|
28¡À2.5%
|
35¡À2.5%
|
40¡À2.5%
|
Open
Circuit Damping
|
0.337
|
0.271
|
0.200
|
0.600¡À2.5%
|
0.600¡À2.5%
|
0.681¡À2.5%
|
Damping
Coefficient
|
0.6¡À2.5%
(2400¦¸)
|
0.6¡À2.5%
(1400¦¸)
|
0.6¡À2.5%
(640¦¸)
|
/
|
/
|
/
|
Sensitivity
(V/m/s)
|
28.8¡À2.5%
|
28.8¡À2.5%
|
28.8¡À2.5%
|
31.0¡À2.5%
|
32.5¡À2.5%
|
34.0¡À2.5%
|
Coil
resistance (¦¸)
|
375¡À2.5%
|
375¡À2.5%
|
375¡À2.5%
|
385¡À2.5%
|
560¡À2.5%
|
662¡À2.5%
|
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¡æ
¡« + 100¡æ
|
Characteristics
TOP¡ü |