(under construction)


The Wheatstone bridge resistance measurement node gives a simple solution to field measurements of common low-value resistive sensors in wheatstone bridge configurations. It can measure values of a resistive sensor in quarter-bridge, half-bridge or full-bridge configurations, particularly load-cell and strain-gauge sensors. Basicly, this is a strain-gauge amplifier with a CANopen interface.



  • Full-bridge: 2mV/V for 100%
  • Excitation sense for cable loss compensation
  • Sample rate 10Hz down to 1/60Hz
  • Cable compensation using 3-wire measurements
  • Various filtering options
  • Capture min/max/avg at slow message rate
  • Possibility for custom firmware with specific signal processing functions
Resistance sensor CAN-bus node

Network functions (via a gateway)

  • Stream data via JSON
  • View data directly via HTML, no cloud needed
  • Logging to micro-SD card
  • Bus ID assigned via serial number
  • Calibration, configuration & firmware update


  • Load-cell power 3.0V via 250Ω
  • 24-Bit delta-sigma analog digital converter
  • Measurement circuit galvanically isolated from CAN-bus using 500V functional isolation
  • Grounded 5.2V/250Ω diode barriers for intrinsic safe sensor signals
  • Operating voltage 9-38VDC, <1W
  • 6-Way 3.5mm screw terminal connection for sensor
  • 5-Pin spring-contact termination for CAN, power and shield
  • Aluminium IP67 enclosure 64x58mm, height 35mm
  • Integrated mounting flanges (94mm wide), optionally without flanges
  • Two M16 brass cable gland entries in sides
  • Optional with 5-pole industrial M12 plug connection
  • ATEX (IEC 60079) 'ic', 'ec', 'mc' & 'tc'



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