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Crack Movement Recorder Kit

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The Wireless Crack Movement Recorder provides continuous recording of both movement in crack width and ambient temperature. The unit is configurable to measure at a pre-defined interval of 10 seconds to 91 hours. The built in data logger stores readings for later download wirelessly onto a PC from a range of up to 150m. This kit contains everything required (except from the PC) to set up a monitoring system. Further units can be purchased individually to extend the system.

The unit is powered by a user-replaceable battery, which should last between six months and five years, depending on how the unit is configured and frequency of downloads. The measurements are stored in internal memory and are downloaded to a Windows PC using a USB Communications Module (one is required and available separately). One Communication Module can be used to connect to up to thirty-two Crack Movement Recorders.

Monitoring in two dimensions using two units (normally horizontal and vertical) is explained in the manual.

The unit is supplied with a Wireless Communication Module, fixings and the latest version of the user guide and software.


Movement Sensor

  • Range: 80mm (extension cables are available)
  • Resolution: 0.003mm
  • Linearity: 0.07% full scale

Temperature Sensor

  • Range: -20C – +80C
  • Resolution: 1C

Data Logger

  • Capacity: 31926 Readings (15963 readings with redundancy)


  • Frequency: 868MHz
  • Range: 150m in free space


  • Power Supply 3.6v 1/2AA Battery


  • Working Temperature: -35C – +85C (or according to installed battery)
  • Cable Tension: 10N
  • Protection Rating: IP65
  • Mass: 200g

System Requirements
The software requires Windows XP or later.

Crack Movement Recorder Kit

Crack Movement Recorder Kit


With the Recorder fixed using the supplied screws and plugs and/or Araldite Rapid Epoxy (available separately), the cable extends across the crack and secures to the opposite surface using the supplied vine eye screw. Full instructions provided.