Trillium 240 Broadband Seismometer

The Trillium 240 is one of the highest performing weak motion seismometers in the world.

This exceptional seismometer offers low noise with a response flat to velocity from 240 seconds to 35 Hz and a self-noise below the NLNM from 100 seconds to 10 Hz.

The integrated web browser interface means no requirement for a separate breakout box.

The factory calibration values exist on the seismometer and are easily accessible via the web browser interface.

Its switchable XYZ/UVW outputs provide independent calibration of sensor elements and electronics.

Its advanced thermal design reduces the effects of significant temperature fluctuations, minimizing the requirements for external thermal insulation.

Nanometrics’ Trillium 240 seismometer might be right for you if:

  • You’re looking for a seismometer for portable or fixed network applications

  • You need to minimize the effects of significant temperature fluctuations

  • You’re installing in a remote area and need to minimize power consumption

TECHNOLOGY

Specifications Subject to change without notice.

Topology:
Feedback:
Mass Centering:
Leveling:
Alignment:

Symmetric tri-axial
Force balance with capacitive displacement transducer
Automatic mechanical re-centering can be remotely initiated 
Integrated bubble level, adjusted locking leveling feet
Vertical scribe marks for E/W, precision holes for 5/16" alignment rod for N/S

PERFORMANCE

 

Noise:
Passband:
Clip level:
  Temperature:
Velocity:

 Below the NLNM from 100 seconds to 10 Hz 
Flat to velocity from 240 seconds to 35 Hz
> 15 mm/s up to 1.5 Hz 
±10°C without re-centering
1200 V*s/m standard velocity

ANALOG INTERFACE

 

Velocity Output:
Mass Position:
Mass Centering:
Calibration:

40 V peak-to-peak differential, selectable XYZ or UVW mode
Three independent voltage outputs
Single 5 V active-high control
Single voltage input with one active high control signal per channel; remote calibration in XYZ or UVW

DIGITAL INTERFACE

 

Type:
With Access To:

Serial RS-232 compatible interface for state-of-health, command and control
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:
Power Consumption:
Protection:

9-36 VDC
650 mW typical at 15 VDC input
Reverse voltage protected
Auto-resettable over-current protection
No fuse design

PHYSICAL

 

Connector:
Diameter:
Height:


Weight:
Parasitic Resonance:

19 pin MIL-C-26482, mounted on base
25 cm
26.5 cm without leveling feet
28.6 cm with leveling feet at minimum extension
29.5 cm with leveling feet at maximum extension
14 kg
None below 150 Hz

ENVIRONMENTAL

 

Operating Temperature:
Humidity:
Shock:

-20°C to +50°C
0-100%
20 g half sine, 5 ms without damage, 6 axis
No mass lock required for transport

 

Seismology noise

 

 

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Contact a Nanometrics expert.