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24-Channel 0-20/4-20 mA input board

DNx-AI-204, DNA-AI-204, DNR-AI-204, DNF-AI-204


  • 24 differential analog input channels
  • Maximum sampling rate of 1000 Hz per channel
  • 18-bit resolution
  • ±3 µA accuracy
  • 350 Vrms Isolation
  • Dynamic autozero support
  • Embedded averaging engine
24-Channel 0-20/4-20 mA input board
Product Style: What do the "DNx" prefixes mean? "DNA" prefix is for a Cube & MIL Cube Board, "DNR" prefix is for a Rack & MIL Rack Board , and "DNF" prefix is for a FLATRACK board.
Software/Programming: How UEI solutions are used. Hosted - Connected to a PC with Windows, Linux, QNX, VxWorks, RTX, or similar OS. Hosted also is for OPC-UA, Modbus and EtherCAT. Standalone - Controller with Linux or VxWorks OS, Simulink I/O Target or UEILogger. Available options for this product are shown in the drop down menu.
Quantity: $2210
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Typically in stock for shipment in 3-4 weeks. Subject to global supply chain challenges.

DNx-AI-204, DNA-AI-204, DNR-AI-204, DNF-AI-204

The DNx-AI-204 are 24 channel 0-20/4-20 mA input boards for use in UEI's Cube/RACKtangle/FLATRACK I/O chassis respectively. The high channel count allows a single six-slot Cube to monitor up to 144 analog inputs in a single 4.0" by 4.1" by 5.8" package while the 12-slot RACKtangle chassis monitors up to 288 channels in a 3U rack.

The 0-20 mA input range makes the AI-204 an ideal measurement solution in a host of oil and gas, automotive, aerospace and power generation applications where most transducers work on a 0-20 mA or 4-20 mA scale. Programmable gains of between 1 and 10 combined with the board's 18-bit A/D converter provides resolution as low as 19.1 nA.

The DNx-AI-204 provides sample rates as high as 1000 sample per second on each channel (24 kS/s aggregate). Another great feature, the oversampling engine, allows DNx-AI-204 to automatically acquire as many samples as possible for the given gain/speed and average them, thus dramatically improving noise immunity.

One of the most powerful features of the DNx-AI-204 is automated offset compensation which can remove offset fluctuations over the temperature and/or time. This allows reduction of the temperature drift to a few microamps over the full specified range.

The DNx-AI-204 offers 350 Vrms of isolation between itself and other I/O boards as well as between the I/O connections and the chassis. Like all UEI DNx series I/O boards, the DNx-AI-204 offers operation in extreme environments and has been tested to 5g vibration, 100g shock, from -40º to +85º C temperatures and at altitudes up to 70,000 feet.

The board is supported by a variety of cable and screw terminal options certain to meet the needs of almost all users. For those wishing to create their own cables, all connections are through a standard 62-pin "D" connector allowing OEM users to build custom cabling systems with standard, readily available components.

The DNx-AI-204 is supported by a complete software “suite" including support for Windows, Linux and all popular RTOS. Windows support is provided by the UEIDAQ Framework which includes a simple yet complete software interface to all popular Windows programming languages and DAQ applications including LabVIEW and MATLAB. An extensive factory written software suite is also provided for all popular “non-Windows" operating systems including Linux, VXworks, QNX, INtime and more. All software support includes extensive example programs that make it easy to cut-and-paste the I/O software into your applications.

The DNx-AI-204 is a member of UEI's popular Guardian series, which provide high levels of user diagnostics. The AI-204 board provides circuit breaker functionality, which can help you reduce mean downtime by protecting the boards from external hardware failures.



  • PowerDNA
  • UEIModbus

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