Mini Broadband Seismometer MBB-2
The Mini Broadband Seismometer MBB-2 represents the next evolution in compact, affordable, and ultra-reliable seismic sensors. With a frequency response range from 120 seconds to 160 Hz, the MBB-2 delivers exceptional data quality in a lightweight, rugged, and low-power package that’s ideal for both permanent and portable seismic network installations. Designed for simplicity, the MBB-2 requires no mass lock or centering adjustments, drastically reducing setup time, training requirements, and deployment costs. Its wide operational tilt range and capability for both surface and borehole deployment (up to 100 meters) make it a versatile choice for earthquake early warning systems, oil and gas exploration, and geothermal monitoring—even in harsh environments down to -40°C.
- Wide Frequency Response — Captures seismic data across 120 sec to 160 Hz, suitable for both teleseismic and local events.
- Ultra-Low Power Consumption — Consumes only 260 mW, perfect for remote, off-grid deployments.
- Maintenance-Free Design — No mass lock or mass centering required, simplifying installation and reducing operational cost.
- Surface & Borehole Ready — Can be deployed at depths of up to 100 meters or used in traditional surface installations.
- Wide Operational Tilt Range — Tolerates significant ground inclination, minimizing site preparation needs.
- All-Weather Performance — Fully operational down to -40°C, ideal for extreme environments.
- Quick Deployment Mode — Optional 1s mode for rapid temporary setups in portable seismic networks.
- Digitizer Compatibility — Seamlessly integrates with all major seismic digitizers on the market.
- Permanent Seismic Networks — Long-term earthquake and tectonic monitoring.
- Portable Seismic Networks — Rapid deployment for temporary seismic surveys or event response.
- Oil & Gas Industry — Monitoring of induced seismicity and reservoir behavior.
- Earthquake Early Warning Systems (EEWS) — Critical real-time seismic detection for public safety infrastructure.
- Geothermal Monitoring — Seismicity tracking during geothermal energy exploration and production.
| Specification | Details |
|---|---|
| Sensor Technology | Triaxial orthogonal, XYZ oriented feedback sensor elements with capacitive displacement transducer |
| Sensitivity | 750 V/(m/s), optionally 1500 V/(m/s), trimmed to ±0.5% precision |
| Bandwidth | -3 dB points at 120 seconds and 160 Hz |
| Operable Tilt Range | ±2.5° |
| Dynamic Range | 155 dB at 1 Hz |
| Clipping Level | 26 mm/s peak from 0.0083 Hz to 40 Hz; proportional to 1/f above 40 Hz (10 mm/s at 100 Hz); proportional to 1/f² below 0.0083 Hz |
| Velocity Output | Industry standard 40 V peak-to-peak differential output |
| Mass Position Output | Independent mass position output for each of the XYZ axes |
| Calibration | Calibration input for XYZ components; single digital control line activates calibration on all three axes |
| Voltage Input | 9–36 V DC input (internally isolated) |
| Operational Temperature | –40 to +60 °C |
| Power Consumption | Typically 260 mW |
| Posthole Orientation | Yoke adapter and orientation poles available |
| Physical | Height: 13.8 cm (sensor body & connector), 14.4 cm (including fixed feet) Diameter: 9.8 cm (3.875") Weight: 2.95 kg (6.5 lbs) Rating: IP68 (Glenair connector rated 3,500 psi mated) |
Download data sheet
