Wireless VW-RTU

Wireless VW-RTU

The VW-RTU is capable of acquiring data from up to 4 vibrating wire instruments from any manufacturer, and runs on batteries for 3-10 years. The system deploys in a matter of hours instead of days or weeks like typical wired systems.

Wireless VW-RTU


  • Supports up to 4 vibrating wire and/or thermistor instruments from any manufacturer
  • Perfect system for monitoring surface piezometers for open-pit mines
  • Data acquisition is completely wireless and battery-powered
  • Standard wireless range underground up to 150m+, on surface over 600m!
  • Standard battery pack lasts about 3 years, with options for a 10 year battery pack or external power (solar)
  • Purpose built wireless mesh network for Geotechnical Instrumentation and Monitoring
  • Fast installation with no need for skilled labour to run wires or install infrastructure
  • Unlimited scalability – just add more wireless nodes to extend the system
  • 900MHz mesh is an excellent choice for underground mining applications – signals go around corners very well
  • Integrates seamlessly with the MDT-RTU
  • Also acts as a standard infrastructure/repeater node for the network

Please contact MDT for more details!

Features and Benefits

  • Connect up to 4 VW instruments with thermistors
  • Automatic characterization of VW signal
  • Great for monitoring surface piezometer wells


  • Hydrology monitoring applications, such as piezometers for ground and surface water monitoring in remote locations
  • Structural monitoring of key infrastructure such as shafts, with vibrating wire strain gauges and tilt meters able to be installed remotely from communications infrastructure


  • 902-928 MHz
  • RX sensitivity: -105 dBm
  • Typical omnidirectional range in underground mines: 50 m to 150 m
  • Typical omnidirectional range on surface: 50 m to 600 m
  • Connectivity: 4 Vibrating Wire Sensors
  • Vibrating Wire Interface
  • Parametric Filtering
  • Excitation Frequency: 3KHz-10KHz
  • Thermistor Range: 3k-100k
  • Battery life: typical = 3 years (depends on level of network activity), minimum = 1 year (standard warranty)


  • MineHop replacement battery pack