Borehole geophone PS-1

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Overview
PS-1 low-frequency geophone is a passive 1 Hz geophone that requires no external power. It is designed for deep seismic exploration, engineering pulse measurements and vibration analysis. The PS-1B variant provides a 0.75 Hz natural frequency and higher sensitivity for applications requiring greater low-frequency response.

Parameters

• Model: PS-1 / PS-1B
• Natural frequency (Hz): 1 ±10% (PS-1) / 0.75 ±0.1 (PS-1B)
• Damping: 0.36 ±20% (PS-1) / 0.5 ±20% (PS-1B)
• Sensitivity (V/m/s at 80 Hz): 200 ±10% (PS-1) / 650 ±10% (PS-1B)
• DC resistance (Ω): 3300 ±10%
• Distortion: ≤0.2% (PS-1) / ≤0.3% (PS-1B)
• Insulation resistance: ≥50 MΩ
• Operating temperature: -25°C to 55°C
• Dimensions: Φ65 × 106 mm
• Weight: 1400 g
• Working direction: vertical or horizontal

Technical specifications

• Passive geophone, no external power required
• Low natural frequency options for seismic applications
• Compact cylindrical housing Φ65×106 mm
• Designed for field deployment and borehole or surface coupling

Applications

• Deep seismic exploration and reflection surveys
• Engineering vibration and pulse measurement
• Microseismic monitoring and passive seismic studies
• Laboratory and on-site vibration analysis

Installation & orientation

• Can be installed vertically or horizontally; ensure firm coupling to ground or mounting base
• Avoid exposure to high voltage and strong mechanical shocks
• Use proper cable shielding and connectors to minimize noise

Notes

• Damage resulting from high voltage or physical damage is excluded from the warranty coverage
• Product specifications may be updated without prior notice