| Natural Frequency ( Hz ) | 10Hz ± 2.5% |
|---|---|
| Coil Resistance（Ω） | 375 ± 2.5% |
| Open Circuit Intrinsic Voltage Sensitivity ( V/m/s ) | 28.8 V/m/s ± 2.5% |
| Sensitivity With Shunt Resistor ( V/m/s ) | 22.9 V/m/s ± 2.5% |
| Typical Spurious Frequency (Hz ) | ＞240Hz |
| Natural Frequency ( Hz ) | 10Hz ± 5% |
|---|---|
| Voltage Sensitivity ( V/m/s ) | 28 V/m/s ± 5% |
| Coil Resistance | 395 Ω ± 5% |
| Moving Mass | 11g |
| Harmonic Distortion ( % ) | ＜0.2% |
| Natural Frequency | 1Hz±10% |
|---|---|
| Sensitivity | 200 V/m/s ±10% |
| Spike | 75mm |
| Lead-in Cable | 1 M |
| Geophone Case | Horizontal Waterproof Land Case |
| Natural Frequency ( Hz ) | 28Hz ± 5% |
|---|---|
| Voltage Sensitivity ( V/m/s ) | 39 V/m/s ± 5% |
| Coil Resistance | 395 Ω ± 5% |
| Moving Mass | 11g |
| Harmonic Distortion ( % ) | ＜0.2% |
| Natural Frequency ( Hz ) | 28Hz ± 5% |
|---|---|
| Sensitivity With Shunt Resistor ( V/m/s ) | 31.0 V/m/s ± 5% |
| Coil Resistance | 385 Ω ± 5% |
| Moving Mass | 10.2g |
| Harmonic Distortion ( % ) | ＜0.2% |
| Natural Frequency ( Hz ) | 8Hz ± 5% |
|---|---|
| Sensitivity With Shunt Resistor ( V/m/s ) | 28.8 V/m/s ± 5% |
| Coil Resistance | 375 Ω ± 5% |
| Moving Mass | 11.3g |
| Harmonic Distortion ( % ) | ＜0.2% |
| Natural Frequency ( Hz ) | 100Hz ± 10% |
|---|---|
| Sensitivity With Shunt Resistor ( V/m/s ) | 35.0 V/m/s ± 5% |
| Coil Resistance | 820 Ω ± 10% |
| Moving Mass | 9.0g |
| Harmonic Distortion ( % ) | ＜0.2% |
| Nature Frequency Hz | 5Hz ±7.5% |
|---|---|
| Sensitivity | 80±5% V/m/s |
| Distortion | ≤0.1% |
| Opening Circuit Damping | 0.6±7.5% |
| Coil Resistance | 1850 Ω±5% |
| Natural Frequency | 2Hz±10% |
|---|---|
| Sensitivity (v/m/s) | 200±10% |
| Spike | 75mm |
| Lead-in Cable | 1 M |
| Geophone Case | Vertical Waterproof Land Case |
| Natural Frequency | 2Hz±10% |
|---|---|
| Sensitivity (v/m/s) | 200±10% |
| Spike | 75mm |
| Lead-in Cable | 1 M |
| Geophone Case | Vertical Waterproof Land Case |
