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GS 20DX geophone 40hz
The GS 20DX geophone 40hz (EG-40-I) is a conventional double-lead spring geophone with small error in operating parameters and stable and reliable performance. The structure is reasonable in design, small in size and light in weight, and is suitable for seismic exploration of strata and geological environments of different depths.
| Type | EG-40-I |
| Natural Frequency ( Hz ) | 40Hz ± 5.0% |
| Coil resistance(Ω) | 575Ω ± 5.0% |
| Open Circuit Damping | 0.42 ± 5.0% |
| Damping With Shunt Resistor | 0.57 ± 5.0% |
| Open Circuit Intrinsic Voltage Sensitivity ( v/m/s ) | 42.0 v/m/s ± 5.0% |
| Sensitivity With Shunt Resistor ( v/m/s ) | 30.4 v/m/s ± 5.0% |
| Damping Calibration-Shunt Resistance(Ω) | 1500 |
| Harmonic distortion ( % ) | ＜0.20% |
| Typical Spurious Frequency (Hz ) | ≥380Hz |
| Moving Mass ( g ) | 8.2g |
| Typical case to coil motion p-p ( mm ) | 1.5mm |
| Allowable Tilt | ≤20º |
| Operating Temperature Range ( ℃ ) | -40℃ TO +80℃ |
| Height ( mm ) | 33.5 |
| Diameter ( mm ) | 27.0 |
| Weight ( g ) | 98.5 |
| Warranty Period | 3 years |
All parameters specified here in are rated at a temperature 20℃±2℃
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