The High-Performance Seismic Sensor Company
The Mini Broadband Seismometer (MBB-2) is the latest sensor offering from Metrozet for the vault or posthole installation. The MBB-2 offers a response between 120 sec and 160 Hz in a smaller, rugged, low power and low cost system that is easy to install and deploy. Built with ease of installation in mind, the MBB-2 does not require mass lock, mass centering, and has a large operational tilt range which combines to reduce installation training, time, and cost.

• No mass lock required

• No mass centering required

• Small, portable 120 second broadband sensor

• Large operational tilt range

• Stainless steel housing with oceanographic-grade connector

• Low-self noise
The MBB-2 was engineered from the ground up to deliver best-in-class performance. Thermal compensation
and a sensor design with a truly linear motion combine to deliver the best high fidelity data from a sensor
of this size.

Sensor Technology:  Triaxial orthogonal, XYZ oriented feedback sensor
elements with capacitive displacement transducer

Mass Centering:  Not required

Sensitivity:  750 V*sec/m nominal, trimmed to ą 0.5% precision

Bandwidth:  -3dB points at 120sec and 160Hz

Operational Tilt Range:  ą 2.5 Degrees

Self-Noise:  Below the NLNM from 17 sec to 5 Hz

Velocity Output:  Industry standard 40V peak-to-peak differential output

Mass Position Output:  Independent mass position output, XYZ axes

Calibration:  Calibration input for XYZ; Single digital control line to activate  calibration on all three axes

Short Period Mode:  1sec mode used for quick deployment; Digital control
line enables short period mode on all 3 axes

Electrical Protection:  Over-voltage, reverse-voltage, and current overload

Galvanic Isolation:     Power input and digital control lines (setup mode and calibration enable lines have independent galvanic isolation)

Operational Temperature.:  -40 to +60 ēC

Power Consuption:  240mW

Posthole Orientation:   Yoke adapter and orientation poles available
A Kinemetrics Division
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222 Vista Ave.
Pasadena, CA 91107
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