(under construction)

Description

This resistance measurement node gives a flexible solution to field measurements of common low-value resistive sensors in various configurations. It can measure values of a resitive sensor in quarter-bridge, half-bridge or full-bridge configurations. In addition, the device can measure 'straight' resistors, potmeters, small-signal DC voltages and thermocouples.

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bridge
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half
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quarter
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pt100
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thermo
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potmeter
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dc

Specifications

  • Full-bridge mode: 2mV/V for 100%
  • Half-bridge mode: 1mV/V for 100%
  • Quarter-bridge mode: 1mV/V for 100% with 350Ω build-in reference
  • Resistance mode: max 3kΩ
  • Voltage mode: max 3V at gain=1, max 25mV at gain=128
  • Excitation voltage ~3V, max 10mA
  • 24-bit Delta-sigma analog digital converter, > 21-bit ENOB
  • Cold-junction temperature measurement near connector block
  • Sensor input galvanically isolated from CAN-bus, 2500V isolation
  • Operating voltage 6-50VDC
  • Polycarbonate enclosure 64x58mm, height 35mm
  • Integrated mounting flanges (94mm wide), optionally without flanges
  • IP67 sealed and potted electronics
  • Two PG9 cable gland entries in sides
  • Optional with 5-pole industrial M12 plug connection
Resistance sensor CAN-bus node

Functionality

  • Sample rate 1000Hz down to 1/60Hz
  • Cable compensation using 3-wire measurements
  • Various filtering options
  • Capture min/max/avg at slow message rate
  • Bus ID assigned via serial number
  • Configuration & firmware update via gateway device
  • Posibility for custom firmware with specific signal procesing functions

Availability

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