SS Series Linearized Velocitimeters
Our linearized velocitimeters SS-10/05/02 and 01 are manufactured with the geophone cell with an eigen-frequency of 4.5 or 2 Hz. The signal is equalized by a electronic circuit board with the Lippmann method that is used since few decades.
OVERVIEW
Description
The SS Series represents a new generation of linearized velocitimeters engineered for precision seismic and ambient vibration monitoring. Built on proven 2 Hz and 4.5 Hz geophone cells, the sensors achieve an extended flat frequency response through advanced Lippmann equalization circuitry, a technique trusted worldwide for decades.
Models: SS45, SS20, SS10, SS05, SS02, SS01
Key Advantages
- Extended Bandwidth – Eigenfrequency shifted to lower values, creating a wider flat frequency response than natural geophones.
- Optimized for HVSR Noise Surveys – Exceptional tilt tolerance ensures consistent performance in the field.
- Custom Sensitivity – Choose from 400, 800, 1200, or 2400 V/m/s, ensuring compatibility with both modern and legacy digitizers.
- Flexible Deployment – Available as surface sensors, embedded in VelBox (SL06) or GeoBox (SR04), or in borehole version (SS-BHV).
- Proven Reliability – In continuous global use for over 20 years across seismic, SHM, O&G, and EEWS networks.
- Robust Construction – Aluminum CNC-milled casing, IP68 protection, –20 to +70 °C operation, stainless steel/titanium housings optional for marine/borehole installations.
Model Reference
- 1 Hz and 0.5 Hz → Based on 4.5 Hz cell
- 0.2 Hz and 0.1 Hz → Based on 2 Hz cell with mechanical blocking system to protect integrity during transport
⚡ High-performance. Tilt-resistant. Customizable sensitivity.
The SS Series delivers dependable results for both research laboratories and field monitoring deployments, ensuring precision and adaptability.
✅ Precision-engineered for seismic, structural, and industrial monitoring.
The SS Series Linearized Velocitimeters combine robust design, wide adaptability, and customizable sensitivity to meet the most demanding research and engineering challenges.
APPLICATIONS
The SS Series sensors, depending on digitizer configuration, support a wide range of uses:
- Seismic Monitoring – Earthquake detection, aftershocks, regional networks
- HVSR (Nakamura Method) – Noise-based surveys for site characterization and microzonation
- Structural Health Monitoring – Modal analysis and vibration studies of critical infrastructure
- Oil & Gas Reservoir Monitoring – Induced seismicity and microseismic surveillance
- Early Warning Systems (EEWS) – Real-time hazard detection for emergency response













