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PRODUCT

SURFACE BROADBAND

Low noise broadband and very broadband seismometers suitable for surface, vault and field.
Advanced force balance feedback guarantees excellent stability and linearity across the passband.
Based on an electrochemical mechanism, our transducers have many advantages over traditional electromechanical sensors, such as a larger motion to voltage conversion ratio and the fact that they do not require a mass lock or mass centering.
Rugged, with low power consumption, our broadband seismometers operate over a wide temperature range.

Tellus Full Size Surface Broadband

Full Size Tellus is our highest performing broadband in terms of noise.

Tellus Compact Surface Broadband

Tellus Compact is a few dB noisier than Full Scale, but still performs very well.

Tellus Post-hole Broadband

Post-hole version of Tellus broadband, same performance of Compact.

Available bandwidth:

  • Tellus 30s : offers a response between 30 seconds and 50Hz. No need for mass centering or locking, easy to use and to install.​
  • Tellus 60s : offers a response between 60 seconds and 50Hz. No need for mass centering or locking, easy to use and to install.​
  • Tellus 120s : offers a response between 120 seconds and 50Hz. No need for mass centering or locking, easy to use and to install.

Upperband limit can be optionally extended to 100Hz.

Operating Principle Electromechanical force-balanced Electromechanical force-balanced Electromechanical force-balanced
Output Signals 2 Horizontal, 1 Vertical; Velocity Flat Response 2 Horizontal, 1 Vertical; Velocity Flat Response 2 Horizontal, 1 Vertical; Velocity Flat Response
Output Swing ±20 V (40 V p-p) ±20 V (40 V p-p) ±20 V (40 V p-p)
Dynamic Range 150dB 150dB 150dB
Passband 30s-50Hz¹ 60s-50Hz¹ 120s-50Hz¹
Generator Constant 2000 V/m/s ² 2000 V/m/s ² 2000 V/m/s ²
Maximum Installation Tilt ±15° ±15° ±15°
Calibration Coils Enable and input lines on sensor connector 1V in 1V out Enable and input lines on sensor connector 1V in 1V out Enable and input lines on sensor connector 1V in 1V out
Dimensions 180x140x100 180x140x100 180x140x100
Weight 3Kg 3Kg 3Kg
Mechanical Resonances >400Hz >400Hz >400Hz
Protection Grade IP68 submersible 1m IP68 submersible 1m IP68 submersible 1m
Temperature Range – 40 to +55C° – 40 to +55C° – 40 to +55C°
Compliance CE CE CE
Cable 3 meters standard or custom 3 meters standard or custom 3 meters standard or custom
Power 3-30 Volt DC 25mA or 10mA low power 3-30 Volt DC 25mA or 10mA low power 3-30 Volt DC 25mA or 10mA low power
Connector PT06E-14-19P(SR) PT06E-14-19P(SR) PT06E-14-19P(SR)

¹ Optional: 100Hz pass band extension
² Optional : 350 – 20.000 V/m/s



Tellus Compact PSD

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