Trillium 240 Broadband Seismometer

• Summary
  The Trillium 240 is one of the highest performing weak motion seismometers in the world. An exceptional very broadband low noise seismometer, the Trillium 240 is ideally suited to portable and fixed network applications.
  
  Trillium 240 has a response flat to velocity from 240 seconds to 35 Hz and a self-noise below the NLNM from 100 seconds to 10 Hz.
  
• Benefits
  • Very broadband performance from a portable, low power seismometer
  • Integrated web browser interface replaces requirement for a separate breakout box
  • Factory calibration values exist on the seismometer, easily accessible via web browser interface
  • Extremely low power consumption, advantageous for remote installations
  • Switchable XYZ/UVW outputs provide independent calibration of sensor elements and electronics
  • The advanced thermal design reduces the effects of significant temperature fluctuations: minimizing the requirements for external thermal insulation.
• Specifications

  TECHNOLOGY
  Topology	Symmetric tri-axial
  Feedback	Force balance with capacitive displacement transducer
  Mass Centering	Automatic mechanical re-centering can be remotely initiated
  Leveling	Integrated bubble level, adjusted locking leveling feet
  Alignment	Vertical scribe marks for E/W, precision holes for 5/16" alignment rod for N/S
  PERFORMANCE
  Noise	Below the NLNM from 100 seconds to 10 Hz
  Passband	Flat to velocity from 240 seconds to 35 Hz
  Clip level	> 15 mm/s up to 1.5 Hz
  Temperature	±10°C without re-centering
  Velocity	1200 V*s/m standard velocity
  ANALOG INTERFACE
  Velocity Output	40 V peak-to-peak differential, selectable XYZ or UVW mode
  Mass Position	Three independent voltage outputs
  Mass Centering	Single 5 V active-high control
  Calibration	Single voltage input with one active high control signal per channel; remote calibration in XYZ or UVW
  DIGITAL INTERFACE
  Type	Serial RS-232 compatible interface for state-of-health, command and control
  With Access To	Mass position display Mass centering command UVW/XYZ mode command Long/short period mode command Temperature: current, min/max since reset Stepper motor position: current, min/max since reset Factory calibration data Instrument ID information
  POWER
  Supply Voltage	9-36 VDC
  Power Consumption	650 mW typical at 15 VDC input
  Protection	Reverse voltage protected Auto-resettable over-current protection No fuse design
  PHYSICAL
  Connector	19 pin MIL-C-26482, mounted on base
  Diameter	25 cm
  Height	26.5 cm without leveling feet 28.6 cm with leveling feet at minimum extension 29.5 cm with leveling feet at maximum extension
  Weight	14 kg
  Parasitic Resonance	None below 150 Hz
  ENVIRONMENTAL
  Operating Temperature	-20°C to +50°C
  Humidity	0-100%
  Shock	20 g half sine, 5 ms without damage, 6 axis No mass lock required for transport

  
  

  Specifications subject to change without notice

• Performances