2HZ / 2.5HZ Seismic Sensing Geophone
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2Hz/ 2.5Hz seismic sensing geophones are mainly used for deep seismic observation, advanced prospecting, natural earthquake investigation, measuring and monitoring of micro-vibration of bridges, dams, railways and highways etc.
Specification1. 2Hz seismic sensing geophone| Type | CDJ-Z2A | CDJ-P2A | CDJ-S2A | CDJ-Z2B | CDJ-P2B | CDJ-S2B | CDJ-Z2C | CDJ-P2C | CDJ-S2C | |||||||
| Type A 2Hz vertical geophone | Type A 2Hz horizontal geophone | Type A 2Hz three-component geophone | Type B 2Hz vertical geophone | Type B 2Hz horizontal geophone | Type B 2Hz three-component geophone | Type C 2Hz vertical geophone | Type C 2Hz horizontal geophone | Type C 2Hz three-component geophone | ||||||||
| Natural frequency Fn (Hz) | 2±10% | 2±10% | 2±10% | |||||||||||||
| Sensitivity G(v/cm/s) | 1.2±10% | 3.5±10% | 2±10% | |||||||||||||
| Coil resistance Rc(KΩ) | 1600±5% | 13000±5% | 6040±5% | |||||||||||||
| Resistance R(KΩ) | 1540±5% | 12800±5% | 5800±5% | |||||||||||||
| Damping coefficient Bt: | 0.7±10% | 0.7±10% | 0.7±10% | |||||||||||||
| Harmonic distortion D(%) | ≤0.2 | ≤0.2 | ≤0.2 | |||||||||||||
| Insulation resistance R(MΩ) | ≥20 | ≥20 | ≥20 | |||||||||||||
| Maximum coil displacement P-P (mm) | 3 | 3 | 3 | |||||||||||||
| Suspension weight M (g) | 60 | 60 | 60 | |||||||||||||
| Operating temperature (℃) | -25~+55 | -25~+55 | -25~+55 | |||||||||||||
| Size | Core | Diameter (mm) | φ38.5 | φ38.5 | φ38.5 | |||||||||||
| Height (mm) | 47 | 47 | 47 | |||||||||||||
| Weight (mm) | 0.25 | 0.25 | 0.25 | |||||||||||||
| sheath | W×L (mm) | 50x60 | 55x68 | 128 | 50x60 | 55x68 | 128 | 50x60 | 55x68 | 128 | ||||||
| Height (mm) | 87 | 87 | 134 | 87 | 87 | 134 | 87 | 87 | 134 | |||||||
| Weight (kg) | 0.48 | 0.5 | 2.35 | 0.48 | 0.5 | 2.35 | 0.48 | 0.5 | 2.35 | |||||||
| Type | CDJ-Z2.5A | CDJ-P2.5A | CDJ-S2.5A | CDJ-Z2.5B | CDJ-P2.5B | CDJ-S2.5B | CDJ-Z2.5C | CDJ-P2.5C | CDJ-S2.5C | ||
| Type A 2Hz vertical geophone | Type A 2Hz horizontal geophone | Type A 2Hz three-component geophone | Type B 2Hz vertical geophone | Type B 2Hz horizontal geophone | Type B 2Hz three-component geophone | Type C 2Hz vertical geophone | Type C 2Hz horizontal geophone | Type C 2Hz three-component geophone | |||
| Natural frequency Fn (Hz) | 2.5±10% | 2.5±10% | 2.5±10% | ||||||||
| Sensitivity G(v/cm/s) | 1.2±10% | 3.5±10% | 2±10% | ||||||||
| Coil resistance Rc(KΩ) | 1600±5% | 13000±5% | 6040±5% | ||||||||
| Resistance R(KΩ) | 1540±5% | 12800±5% | 5650±5% | ||||||||
| Damping coefficient Bt: | 0.7±10% | 0.7±10% | 0.7±10% | ||||||||
| Harmonic distortion D(%) | ≤0.2 | ≤0.2 | ≤0.2 | ||||||||
| Insulation resistance R(MΩ) | ≥20 | ≥20 | ≥20 | ||||||||
| Maximum coil displacement P-P (mm) | 3 | 3 | 3 | ||||||||
| Suspension weight M (g) | 60 | 60 | 60 | ||||||||
| Operating temperature (℃) | -25~+55 | -25~+55 | -25~+55 | ||||||||
| Size | Core | Diameter (mm) | φ38.5 | φ38.5 | φ38.5 | ||||||
| Height (mm) | 47 | 47 | 47 | ||||||||
| Weight (mm) | 0.25 | 0.25 | 0.25 | ||||||||
| Sheath | W×L (mm) | 50x60 | 55x68 | 128 | 50x60 | 55x68 | 128 | 50x60 | 55x68 | 128 | |
| Height (mm) | 87 | 87 | 134 | 87 | 87 | 134 | 87 | 87 | 134 | ||
| Weight (kg) | 0.51 | 0.5 | 2.35 | 0.51 | 0.5 | 2.35 | 0.51 | 0.5 | 2.35 | ||
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