High performance, compact, robust broadband seismometers

40t large 

The Güralp 40 series of instruments are rugged and robust, triaxial, broadband seismometers ideally suited for installation in vaults with moderate noise.

Key Features

  • Force feedback broadband instrument
  • Lifting handle and all connectors on the top of the instrument.
  • Waterproof and durable with O-ring seals throughout
  • Rapid singlehanded installation
  • Digital output and communication versions available

Model range

40T – Robust broadband analogue seismometer – Datasheet View as PDF
40TDE – Robust broadband digital seismometer with acquisition module – Datasheet View as PDF

SYSTEM

Configuration / Topology: Triaxial orthogonal (ZNE)
Feedback: Force feedback.

PERFORMANCE

Response: 60 s to 50 Hz standard (other options available)
Output sensitivity / Clip Level: 2 x 400 V/ms-1 (other options available)
Peak / Full scale output: Three channels - ±20 V (40 V peak-to-peak) differential
Cross axis rejection: >65 dB
Linearity: >90 dB
Lowest spurious resonance: >450 Hz

CALIBRATION

Type: Pulse, sine wave and broadband
Calibration controls: Common signal & enable lines exposed on sensor connector

MASS / MASS MONITORING

Locking: No mass locking required
Mass recentring range: ±3° from horizontal

 

CONTROL

Mass control / locking: Remote offset zeroing

 


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You can view our case studies to find out more about how our instrumentation is used around the world.

Address

 

Guralp Systems Limited
Midas House
Calleva Park
Aldermaston
Reading
RG7 8EA, UK

Tel: +44 118 981 9056
Fax: +44 118 981 9943
E-Mail: sales@guralp.com

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