DNx-AI-222 – 12-Channel, fully isolated RTD/resistance input board

12-Channel, fully isolated RTD/resistance input board


The DNx-AI-222 are 12-channel fully isolated, simultaneously sampling RTD input boards compatible with UEI’s popular chassis. The DNx-AI-222 is an ideal, high accuracy RTD measurement device, offering total errors of less than 0.2 °C on all standard 100 Ohm RTDs. This accuracy combined with the 350 VDC/Vrms channel-to-channel and channel-to-chassis isolation makes the board a perfect solution for industrial temperature measurement, even when using non-isolated RTDs in high voltage environments.



  • 12 fully differential analog input channels
  • 2, 3 and 4 wire connections
  • 100 Ohm DIN and US measurements
  • Channel-to-channel and channel-to-chassis isolation
  • 0.005 °C resolution, 0.2 °C accuracy
  • 0 to 40,000 © resistance measurement range
  • Built-in 50, 60 and 400 Hz rejection (at select sample rates)
  • 100 Hz per channel sample rates

An A/D per channel configuration allows simultaneous sampling at rates up to 150 S/s each (1800 S/s aggregate). The A/D per channel configuration virtually eliminates input cross talk and channel settling time issues.

Software included with the DNx-AI-222 provides a comprehensive yet easy to use API that supports all popular Windows programming languages as well as supporting programmers using Linux and most real-time operating systems including QNX, INtime, VXworks and more.

The UEIDAQ Framework supplies complete support for those creating applications in data acquisition software packages such as LabVIEW, MATLAB/Simulink, or any application which supports ActiveX or OPC servers.

I/O Chassis
Model No.


RACKtangle ®


For DAQ chassis options, click here.