Conventional geophone
1 Product name
GD-XX Series Digital Geophones
2 Product introduction
Fast detailed description:
1 wide frequency band
2 high spurious frequency
3 wonderful S/N
4 little phase displacement
5 perfect resolution
Description:
GD-XX Series Digital Geophones are mainly used in petroleum exploration.The series have wide frequency band, high spurious frequency,wonderful S/N,little phase displacement and perfect resolution.
Application:
petroleum exploration
Specifications:
Parameter/Mode | GD-4.5 | GD-10 | GD-14 | GD-28 | GD-35 | GD-40 | GD-60 | GD-100 |
Natural frequency(Hz) | 4.5±10% | 10±5% | 14±5% | 28±5% | 35±5% | 40±5% | 60±5% | 100±5% |
Damping | 0.6±10% | 0.25±5% | 0.20±5% | 0.6±5% | 0.60±5% | 0.615±5% | 0.65±10% | 0.42±5% |
Damping with shunt resistor |
| 0.686±5% | 0.6±5% | 0.632±5% |
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Sensitivity(V/m/s) | 28.8±5% | 28.8±5% | 28.8±5% | 30±5% | 32.5±5% | 32.5±5% | 55±5% | 39±5% |
Sensitivity with shunt resistor (V/m/s) |
| 20.9±5% | 18.2±5% | 28.5±5% |
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Coil resistance (Ω) | 375±5% | 375±5% | 375±5% | 390±5% | 560±5% | 548±5% | 940±5% | 1084±3.5% |
Closed-circuit resistance(Ω) |
| 273±5% | 236±5% | 370±5% |
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Shunt resistance(Ω) |
| 1000±1% | 640±1% | 7500±1% |
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Distortion | ≤0.2% | ≤0.2% | ≤0.2% | ≤0.2% | ≤0.2% | ≤0.2% | ≤0.2% | ≤0.2% |
Spurious frequency (Hz) |
| ≥200 | ≥200 | ≥300 | ≥500 | ≥500 |
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Moving mass(g) | 11.3 | 11.3 | 11.6 | 10.1 | 9.3 | 9.3 | 11.5 | 7.6 |
Maximum motion (mm) | 4 | 2 | 2 | 1.8 | 1.8 | 1.8 | 1 | 1 |
Allows tilt angle(°) | ≤20 | ≤20 | ≤20 | 90 | 90 | 90 | 90 | 90 |
Diameter(mm) | 25.4 | 25.4 | 25.4 | 26 | 26 | 26 | 27.5 | 27.5 |
Height(mm) | 36 | 32 | 32 | 32 | 32 | 32 | 33 | 33 |
Quality(g) | 87 | 74 | 74 | 95 | 95 | 95 | 100 | 100 |
Operating Temperature() | -40100 | -40100 | -40100 | -40100 | -40100 | -40100 | -40100 | -40100 |
Warranty period (year) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Competitive advantage
Full range of products,Multiple types,Good quality,Direct manufacturers low price,A perfect after sale service
