Strong Motion Feedback Accelerometer

Available from ESS Earth Sciences in Australia only. Guralp Fortis ±4g accelerometer for local earthquake and structural monitoring. Pair with a Gecko or Minimus digital recorder, or upgrade to the integrated Fortimus digital accelerograph.


The Güralp Fortis is a low-noise, force-feedback accelerometer with a large dynamic range. The Fortis is suitable for seismology, hazard mitigation and civil engineering applications. It can be connected to a Kelunji Gecko recorder for simple data logging, or upgrade to the Fortimus with an integrated data logger.

The Fortis has a user-switchable full-scale range, with the maximum range as ±4g switchable to ±2g, ±1g or ±0.5g.

Data sheet: Fortis, Fortimus

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