Nanometrics
Broadband Seismic Sensor Workshop
24 March 2004
Neil Spriggs
Nanometrics
Trillium 40 broadband seismometer
First seismometer development at Nanometrics
Designed for local and regional studies
Balance between spec/time to market, revenue for seismometer unit
Specifications
40 seconds to 50 Hz
Power consumption <0.5 watts
Simple design with no mass lock
Wide operating temperature range with electronic mass centering
Trillium 40
Nanometrics
Very simple to manufacture Symmetric triaxial design, identical axis Single circuit board, surface mount Automatic test software, axis and boards are manufactured independently and are interchangeable
Trillium 40
Nanometrics
Nanometrics Trillium 40
Coherence data,STS-2 vs. Trillium 40Data from Universityof St Louis
Blue CMG-40T self noiseYellow Trillium 40 self noiseRed CMG-3T self noiseGreen STS-2 self noise
Data from IRIS comparison tests
Nanometrics
Trillium 120 broadband seismometer Response, 120 seconds to 50 Hz
Mechanical mass centering using stepper motor
Low power consumption, < 1watt
No mass lock, same mass support system as Trillium 40
Onboard web server with serial interface
Factory calibration data in XML
Center masses using a laptop and browser
Review temperature and power SOH using a browser
Symmetric triaxial design for ease of manufacture
New Developments
Nanometrics
Trillium 120 seismometer and Taurus hand held data Acquisition system
Nanometrics
Thank you.
Nanometrics Incwww.nanometrics .ca
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