Wireless Displacement/Crack Meter SenSpot™ Sensor


SenSpot™ provides an easy to install, scalable solution for distributed structural integrity monitoring. Resensys SenSpot™ technology offers a high performance method for large-scale sensing, wireless synchronization, and ultra-energy efficient wireless communication. SenSpot™ is designed to operate maintenance-free for more than a decade. After installation, SenSpot™ does not need calibration, battery replacement, or any other maintenance during its entire service life. Due to small size and light weight, adhesive-mount SenSpot™ sensors can be applied easily to as many critical spots on a structure as needed, with minimal installation effort. SenSpot™ displacement meter can be used for measuring the progress of the existing cracks in a structure. This device has a sliding element which moves with displacement of structure or growth of a crack.

  • Long lifetime: (minimum expected life without battery replacement 10 years)
  • Lightweight: about 147 g (5.19 oz.)
    • Wireless transmitter: 120 g (4.23 oz.)
    • Cable (1ft): 10 g (0.35oz.)
    • Displacement sensing element: 100 g (3.5 oz.)
  • Easy mounting:
    • Self-adhesive, no drilling is required (e.g. steel)
    • Flange-mount, drilling is required (e.g. con-crete) (Sensing element's installation requires drilling)
    • Quick installation, 1-2 minutes
  • High accuracy: 0.1mm resolution
  • Wide working temperature: -40 to +65°C (-40 °F to +150°F)
  • Long communication range: 1.0km free space
  • Small size:
    • Wireless transmitter: 50mm (1.96”) x 50mm (1.96”) x 50mm (1.34”)
    • Displacement Sensor: 79/104/129/154mm (1/2/3/4”) x 22mm (0.9”) x 22mm (0.9”)
  • Complementary sensing: temperature, battery voltage, etc
  • Monitors expansion joints
  • Monitors activity / propagation of existing cracks
  • Monitors movement