Trillium Compact Exploration

Trillium Compact ExplorerThe Trillium Compact Exploration has been designed for rapid and repeated deployments and is specifically tuned for frequencies of 1Hz to 10Hz. It features an ultra-low noise floor and 20s corner frequency.

Areas of application include

  • Low frequency passive seismic surveys designed to identify hydrocarbon reserves
  • Total field monitoring of induced and natural seismicity
  • Event magnitude and location mapping
  • Cap rock integrity monitoring 

 

  • Ultra-low noise floor with 20 s corner frequency to derive low frequency datasets
  • Uniquely tuned for frequencies of 1 Hz to 10 Hz: ideal for seismic surveys
  • Ease of deployment
    • 10° of levelling freedom to maximize data returns
    • Several integrated mounting options for quick deployments on any terrain
    • Available exploration kit with solar panel, battery, digitizer, and robust sensor
    • Data recorded at each station to avoid wireline deployment 

TECHNOLOGY

  
Topology Symmetric tri-axial
Feedback Force balance with capacitive transducer
Mass Centering Not required
Levelling No levelling within 10° vertical
Alignment

Vertical scribe marks for N/S
Precision N/S-E/W guide in top of cover for straight-edge, line, or laser level 

PERFORMANCE
Self-noise See Performance
Sensitivity 750 V-s/m nominal  ± 1% precision
Off-axis Sensitivity ± 0.5%
Bandwidth -3db points at 20s and 100 Hz
Transfer Function Lower corner poles within ±1% of nominal provided
High-frequency poles within ±5% of nominal provided
No peak in response at high frequency
Clip Level 26 mm/s from 0.1 Hz to 10 Hz
Operational Tilt Range ±10°

Parasitic Resonances

None below 200 Hz

INTERFACE
Connector 14-pin, shell size 12, MIL-C-26482 Series I, top mounted
Velocity Output 2.5 or 5 V peak-to-peak differential 
Mass Position Selectable XYZ or UVW mode
 Output Single voltage output representing maximum mass position 
Calibration Input Single voltage input and one active high control signal to enable all 3 channels.
Remote calibration in XYZ or UVW mode Independent channel selection by serial port

DIGITAL COMMAND AND CONTROL INTERFACE
Digital Interface RS-232 compatible serial IP (SLIP)

Onboard web server standard HTTP
Digital Commands XYZ, UVW mode switching
Calibration channel selection (off, enable all, u, v, or w)
Short/long period mode
Firmware updates
State-of-health request
Digital Data Outputs Independent mass position values
Instrument temperature
Factory sensitivity
Instrument serial number and firmware revision

POWER
Supply Voltage 9-36 V DC isolated input
Power Consumption 165 mW typical when level
Up to 250 mW when tilted
Protection Reverse-voltage and over-voltage protected
Self-resetting over-current protection

 

Self-Noise Performance Plot

Trillium Compact Explorer