track geometry

Track Corrugation Trolley


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 Corrugation Recording Trolley - CRT

The Corrugation Recording Trolley is a lightweight, self-contained instrument to measure the variation in smoothness across a rail head, known as corrugation. After a short digital set up procedure, recording commences by simply pushing the trolley along the track. All the recordings are distance based, therefore the recording is independent of the speed of travel along the track. The CRT recording trolley produces analogue traces on its integral 100 mm thermal recorder to a selected distance base and also records all the measurements simultaneously on a PC memory card for further computer analysis.

Standard Measurements:

  • corrugation_recordingWavelength Range 10 - 600mm
  • Indicating Range 1mm - Infinity
  • Filtered 25 - 150 mm and 150 - Infinity
  • Resolution +/- 2.5┬Ám (averaged)
  • Distance
  • 1 and 10 metre Event Markers
  • User Event Marker


  • Auxiliary Battery Pack
  • Gauge Variations
  • Paper Speed Variations

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