| Customization: | Available |
|---|---|
| Appearance And Structure: | Muller, Clips Optional |
| Function of Measurement: | Seismic Survey |
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| GD-4.5 Vertical | GD-4.5 Horizontal | ||
| Type | GD-4.5 Vertical | Type | GD-4.5 Horizontal |
| Natural frequency(Hz) | 4.5±0.5 | Natural frequency(Hz) | 4.5±0.5 |
| Typical spurious frequency(Hz) | ≥140 | Typical spurious frequency(Hz) | ≥140 |
| Harmonic distortion(%) | ≤0.3% | Harmonic distortion(%) | ≤0.3% |
| Open circuit damping | 0.6±5% | Open circuit damping | 0.6±10% |
| Open circuit resistance(ohm) | 395±5% | Open circuit resistance(ohm) | 395±5% |
| Open circuit intrinsic voltage sensitivity (v/m/s) | 28.5±5% | Open circuit intrinsic voltage sensitivity (v/m/s) | 28.5±10% |
| Allowable tilt(°) | 0 | Allowable tilt(°) | 0 |
| Moving mass(g) | 11 | Moving mass(g) | 11 |
| Max. Coil excursion p.p (mm) | 1.52 | Max. Coil excursion p.p (mm) | 1.52 |
| Length(mm)) | 33.3 | Length(mm)) | 33.3 |
| Diameter(mm) | 25.4 | Diameter(mm) | 25.4 |
| Weight(g) | 87 | Weight(g) | 87 |
| Temperature range(°c) | -40 to +80 | Temperature range(°c) | -40 to +80 |
| Warranty period (year) | 1 | Warranty period (year) | 1 |
| Model | GDJ-DJ | GDJ-JG | GDJ-JF |
| Electromagnetic borehole geophone series | Piston type borehole geohphone series | Non-adjacent borehole geohphone series | |
| Frequency (Hz) | 4HZ-100HZ optional | 4HZ-100HZ optional | 4HZ-100HZ optional |
| Working Mini Diameter (mm) | Φ70-φ120 | Φ50-φ110 | |
| Working Temperature | 25~55 | 25~55 | 25~55 |
| Diameter(mm) | φ55 | φ50 | φ45 |
| Height (mm) | 465 | 500 | 300 |
| Weight (kg) | 60m-10kg, 120m-14kg | 60m-12kg,120m-17kg | 60m-60kg,120m-10kg |
| GD-25-11A Hydrophone | |
| Type | GD-25-11A |
| Natural frequency (Hz) | 10±15% |
| D.C. resistance (Ohm) | 160±15% |
| Voltage sensitivity (V/Bar) | 11±1.5dB |
| Max.working depth(m) | 100 |
| Operation temperature range (°c) | 0 to 35 |
| Unite length (mm) | 116 |
| Unite length with case (mm) | 160 |
| Unite diameter (mm) | 53 |
| Unite diameter with case (mm) | 64 |
| Weight (kg) | 0.4 |
| Lead in length | Under clients ' request |
| GD-25-14A Hydrophone | |
| Type | GD-25-14A |
| Natural frequency (Hz) | 10±15% |
| D.C. resistance (Ohm) | 160±15% |
| Voltage sensitivity (V/Bar) | 14±1.5dB |
| Max.working depth(m) | 100 |
| Operation temperature range (°c) | 0 to 35 |
| Unite length (mm) | 116 |
| Unite length with case (mm) | 160 |
| Unite diameter (mm) | 53 |
| Unite diameter with case (mm) | 64 |
| Weight (kg) | 0.4 |
| Lead in length | Under clients ' request |