Borehole geophone PSO-9.5

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Product overview
The PSO-9.5 omnidirectional geophone provides full 0°–360° operation with no angular limitation. It combines low damping, high sensitivity and a compact lightweight housing for use in petroleum exploration, well logging and industrial vibration monitoring.

Recommended applications
Designed for seismic acquisition, logging, vibration monitoring and general subsurface or industrial motion sensing where omnidirectional response is required.

Technical parameters

• Model: PSO-9.5
• Omnidirectional operation: 0°–360° (no angle limitation)
• Natural frequency (Hz): 9.5 ±7% (alternative tolerance: -5% / +15%)
• Sensitivity (V/m/s): 95 ±10%
• Coil resistance (Ω): 2950 ±5%
• Resistance after shunt resistor (Ω): 2570 ±5%
• Sensitivity with shunt resistor (V/mn/s): 82.8 ±7.5% (alternative: +10%)
• Damping (nominal): 0.42 ±10% (range 0.33–0.53)
• Damping after shunt resistor (20 kΩ): 0.688 ±7.5% (range 0.54–0.74)
• Shunted impedance / Distortion: ≤0.5 (some entries list ≤0.7)
• Maximum motion: 6 mm
• Moving mass: 12.3 g
• Dimensions (D×H): 30.2 × 43.8 mm
• Operating temperature range: -40 to +80 °C
• Warranty: 1 year (see notes)

Notes & warranty
* Warranty excludes damage from high voltage or physical abuse.
* Specifications may be updated without prior notice. Verify tolerances and alternative entries with the datasheet or supplier before integration.