3 Axis Digital Accelerometer

This is a digital, force feedback, triaxial accelerometer with digitiser and data acquisition system integrated in a single unit, designed for specific applications in seismology, hazard mitigation and civil & earthquake engineering to study the response of mega structures like dams, barrages, underground caverns & tunnels etc., in case of any seismic activity. It’s extremely large dynamic range exceeding 145 dB makes it ideal equipment for the applications in the open field and to study the ambient ground accelerations. The unit is manufactured by Encardio-rite in India under license from Gaiacode, UK.


  • An isolated dc-dc converter ensures galvanic isolation of the system and operates from +9VDC to +36VDC.
  • The analogue feedback accelerometer has a vast dynamic range, and the 8-channel 24-bit acquisition system is incorporated to exploit the full dynamic range of the sensor as high gain and low gain digital outputs.
  • The low and high gain outputs are set digitally using the (PGA) Programmable Gain Amplifiers of the 8-channel Acquisition system.
  • Nominally the high gain outputs are set to have a 12 times larger output than the low gain outputs.
  • The sensor’s analogue differential outputs are interfaced to the differential inputs of the digitiser. The digital part of the circuity is optically isolated from the front end analogue to digital converter circuitry.
  • Figure 1 shows the sensor’s connector turret, allowing easy connection to the sensor. All the connectors are waterproof with O ring seals to a depth of 2 meters of water. The display provides the state of health information of the feedback sensor and the digitiser.
  • Full-scale low and high gain sensitivity is digitally user-adjustable from ±4.0 g to ±0.33 g on individual channels of the digitiser.
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Equipment Rental

GDS has a variety of instruments for hire, these Instruments, Readouts and Dataloggers are available for product hire on a short-term (fortnightly) or long-term (monthly) basis including, but not limited to, the following:

  • Load cells
  • Tilt meters
  • Manual Readout units
  • Dataloggers
  • Tiltmeters
  • Inclinometers