GS 20DX geophone 8hz
The GS 20DX geophone 8hz (EG-8-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-8-I |
| Natural frequency ( Hz ) | 8Hz±5% |
| Open circuit damping | 0.38 |
| Damping with calibration shunt | 0.71±5% |
| Calibration shunt resistance(ohm) | 1800 |
| Open circuit sensitivity (v/m/s) | 28 |
| Sensitivity with calibration shunt(v/m/s) | 23±5% |
| Coil Resistance (ohm) | 395±5% |
| Harmonic Distortion ( % ) | ≦0.2 |
| Typical Spurious Frequency ( Hz ) | ≧180 |
| Moving Mass ( g ) | 11 |
| Max.coil excursion p-p (mm) | 1.5 |
| Max.tilt angle | 20º |
| Element Diameter (mm) | 25.4 |
| Element Height (mm) | 33 |
| Element Weight (g) | 87 |
| Operating Temperature(℃) | -40℃ to +80℃ |
All parameters specified here in are rated at a temperature 20℃±2℃ .
