CMG-5T Original

CMG-5T CMG-5T

The CMG-5T is a true broadband feedback accelerometer, suitable for seismology, hazard mitigation and civil engineering applications.

Features

  • Low-noise components for precision and dynamic range
  • Full-scale sensitivity from 0.1 to 4.0 g
  • Additional high gain outputs
  • Low pass corner from 50 to 100 Hz
  • Amplitude linearity > 80 dB
  • Simple installation with a single fixing bolt
  • Fully-adjustable levelling feet
  • Isolated power supply for 10 – 36 V operation
  • Robust and waterproof

Options

  • High pass filtered outputs
  • Base plate and fixing ring
  • CMG-5TD digital output instrument
  • CMG-5TB borehole form factor
  • CMG-5T Compact form factor

Performance

These traces record the 2002 Mw 7.9 earthquake on the Denali Fault in Alaska. Ground movements during this event approached 1 g in amplitude, making it the strongest ever recorded in the Alaskan interior.

The earthquake was recorded at two stations on the Trans-Alaska Oil Pipeline, each around 70 km distant. The pipeline is instrumented with CMG-5TD accelerometers, which combine 5T components with a built-in DM24 digitizer.

Using Güralp Systems' Scream! and ART software packages, the signal can be analysed in a variety of ways. The above graphs show the Fourier spectrum (left in each pair) and response spectrum measured at each of the two sites.

CMG-5 news

The new CMG-5TD Internet Accelerometer

December 2006

The latest evolution of the CMG-5TD is the first broadband feedback accelerometer with direct output to networks and the Internet.


Setting up triggering for a dialup installation

How to configure a Güralp digital sensor or CMG-DM24 so that you can dial in through an attached modem, select and download triggered events.


Case study: Strong-motion arrays for dams

March 2006

Güralp Systems' CMG-5T and 40T-1 sensors are being used for safety monitoring in a major hydroelectric project in Romania.


More articles on this topic...

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