TRILLIUM CASCADIA
- Portable, easy to install, no vault required
- Ideal for sites with unpredictable amplitude ranges
- Rugged design suitable for harsh environments, flood resistant
- Each sensor can be serviced independently
- Minimal footprint
- Never clips
- Low deployment and operating costs
- Digital bubble level for easy downhole leveling
- Description
- Characteristics
- Solutions
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Trillium Cascadia
Trillium Cascadia combines the proven Trillium Compact Posthole with the Class A Titan Posthole in a single instrument. This dual-purpose sensor with an ultra-wide dynamic range measures both strong and weak motion without any disruption to normal operation. Proper deployment is virtually effortless with one hole, one connector, one cable, and two co-located sensors.
The new Cascadia gives you confidence that your strong-motion and weak-motion instruments are of equally high quality and feature wide dynamic range overlap. Cascadia maximizes the scientific return on your investment by providing the richest possible dataset for near-field studies. When recording strong motion, the instruments also serve as a valuable source of weak-motion data that helps calibrate and train event detection algorithms, while benefiting the broader seismological community.
Highly Integrated Station Solution
Trillium Cascadia is optimized for use with our well-known Centaur digital recorder. Using Cascadia with Centaur allows easy configuration of both sensors through the Centaur web interface. You will have full access to extended sensor state information, including sensor tilt, temperature, and more. The digital bubble level in the Centaur graphical user interface simplifies downhole alignment and allows you to check leveling at any time after the instrument has been installed (buried)
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Technical specifications
- SEISMOMETER MODULE
- Topology Symmetrical triaxial
- Feedback Force feedback with capacitive displacement transducer
- Mass Centering Not required
- SEISMOMETER PERFORMANCE
- Nominal Sensitivity 750 V·s/m (exact value specified in the User Manual)
- Accuracy ±0.5% as per User Manual
- Cross-axis Sensitivity ±0.5%
- Bandwidth -3 dB at 120 s and 108 Hz
- Clip Level 26 mm/s to 10 Hz and 0.17 g above 10 Hz
- Dynamic Range >152 dB at 1 Hz
- Tilt Dynamic and operational tilt range ±2.5°
- Spurious Resonances None below 200 Hz
- ACCELEROMETER MODULE
- Topology Triaxial, horizontal-vertical
- Feedback Force feedback with capacitive displacement transducer
- Centering Automatic electronic offset nulling via user interface
- Measurement Range Electronically selectable
- ACCELEROMETER PERFORMANCE
- Bandwidth DC to 430 Hz
- Dynamic Range 166 dB at 1 Hz (1 Hz bandwidth); 155 dB from 3 to 30 Hz
- Offset Electronic nulling to ±0.005 g; Offset alignment range ±0.05 g
- Linearity <0.015% of full scale
- Hysteresis <0.005% of full scale
- Cross-axis Sensitivity <0.005% of full scale
- Temperature Coefficient of Offset Horizontal: 60 µg/°C typical; Vertical: 320 µg/°C typical
- LEVELING
- Digital Bubble Level Graphical level available through Centaur GUI
- Physical Bubble Level Optional accessory
- Alignment Vertical marks for N and S; precision guide for straight edge, line or Centaur recorder
- HARDWARE INTERFACE
- Connector 26-pin Glenair 802-013-0ZZ110-26EA, submersible, top-mounted
- Calibration Inputs Separate inputs for seismometer and accelerometer channels
- Seismometer Output Differential velocity output, selectable XYZ or UVW mode
- Accelerometer Output Differential acceleration output
- DIGITAL COMMAND & CONTROL INTERFACE
- Seismometer Serial Port RS-232 compatible SLIP, built-in HTTP web server
- Accelerometer Serial Port RS-232 compatible SLIP
- POWER
- Supply Voltage Isolated 9 to 36 V DC
- Power Consumption Seismometer ~180 mW, Accelerometer ~1.1 W (idle)
- Protection Reverse polarity, over-voltage, self-resetting over-current
- PHYSICAL
- Diameter 97 mm
- Height 216 mm (without connector and feet); 238 mm (with connector and feet)
- Enclosure Stainless steel
- ENVIRONMENTAL
- Operating Temperature -20°C to +60°C (ultra-low temperature version available)
- Storage Temperature -40°C to +70°C
- Shock 100 g half-sine, 5 ms, 6 axes
- Submersion IP68, submersible to 300 m depth
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APPLICATIONS
- Earthquake Early Warning
- Structural Health Monitoring
- Volcano Monitoring
- Local / Regional Monitoring and Modeling
- Aftershock Monitoring
- Induced Seismicity Monitoring
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