130-SMHR Strong Motion Accelerograph
from Reftek Systems Inc

The 130-SMHR is a self contained Accelerograph with built in, force balance, triaxial accelerometer to assist response to damaging earthquakes, volcanoes, and tsunamis and also determine the impact of these seismic events on buildings and structures.

The accelerometer in the 130-SMHR has a full scale range of greater than ± 4g with a dynamic range of 155 dB from DC to 2 Hz. Customers can opt for the six channel system, enabling the deployment of an additional external three axis sensor. With both long and short term deployment in mind the 130-SMHR is equipped with advanced communication features including TCP/IP over Ethernet, Asynchronous Serial, and optional V.90 modem for communication over standard telephone line. An LCD continuously displays state-of-health and status information for shorter deployment periods.

130-SMHR Accelerograph, Image courtesy of RefTek, a Trimble Brand.


  • State-of-the-Art 24-Bit ADC
  • Wide Dynamic Range
  • Low Noise, Force-Balance accelerometer
  • Simultaneous Telemetry/Self Recording
  • IP over Ethernet and Asynchronous Serial
  • Embedded / Removable Mass Storage
  • Low Power

The 130-SMHR is available in an optional command line firmware version, which was specifically designed for structural monitoring applications. Setup and control is accomplished using the strong motion command and control program SMCC, that runs on multiple platforms. This firmware allows control of three relay closure contacts for external alarm activation and can automatically dial the optional modem for remote notification of events and alarms.

The 130-SMHR can also run the standard REFTEK 130 firmware. The standard firmware provides more control options for sample rates and triggering than the command line firmware, but does not include relay control. Setup and control is accomplished with either the iFSC Controller or a desktop computer running RTI. These interfaces allow the user to program the instrument’s operating parameters and perform diagnostic functions.

The robust instrument housing is large enough to contain a backup battery which is sufficient to sustain the instrument for 48 hours in the instance external power is lost.