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4-Channel High Speed, Strain Gage Input Board

DNx-AI-224, DNA-AI-224, DNR-AI-224, DNF-AI-224


  • For use with Cube series chassis
  • 4 Strain Gage input channels
  • 18-bit resolution, 100 kilosample/second
  • Simultaneous sampling on all channels
  • Built-in anti-aliasing filters
  • Full, Half and Quarter Bridge inputs
  • 120, 350 and 1000 ohm bridge completion
  • Built-in tension/compression shunt calibration resistors
4-Channel High Speed, Strain Gage 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: $3790
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Typically in stock for shipment in 3-4 weeks. Subject to global supply chain challenges.

DNx-AI-224, DNA-AI-224, DNR-AI-224, DNF-AI-224

The DNx-AI-224 are high speed, four channel strain gage input boards for UEI's data acquisition and control Cubes and RACKtangle I/O racks respectively. The boards provide an ideal combination of high speed, accuracy and connection flexibility and are suitable for use in a wide variety of applications.

The analog inputs offer 18-bit resolution at sample rates up to 100 kilosamples per second. Each channel has an A/D converter and all four channels are sampled simultaneously. The combination of the 18-bit resolution with the board's automatic offset zeroing and automatic gain calibration ensure the measurements are extremely accurate. Each channel also includes an anti-aliasing filter that automatically is configured to match the sample rate (*Please see the note on the following page for details)

The DNx-AI-224 accepts inputs from full, half or quarter bridge gages and load cells. Bridge completion resistors are built in for use with 120, 350 and 1000 ohm gages. Of course full bridge gages of any resistance value may also be measured. Each channel offers an independent excitation output, programmable from 0 to ±10 Vdc, in 65535 steps. The excitation outputs can drive up to 50 mA each, allowing 1k bridges to be driven at ±10 Vdc, 350 ohm bridges at ±8.75 V and 120 ohm bridges at up to ± 3 Vdc.

The board provides on-board compression and tension shunt calibration with shunt-calibration values selectable between 10 k and 170 k ohm, in 256 steps. Connections for external, user supplied shunt resistors are also provided. An automatic input nulling/balancing capability has also been built in allowing most bridges to be quickly and easily balanced before testing actually begins.

The DNx-AI-224 offers 350 Vrms of isolation between the I/O connections and the Cube or RACKtangle. Like all UEI Cube and RACKtangle I/O boards, the DNA offers operation in harsh environments. Cube systems have been tested to 5g vibration, 50g shock, -40 to +85 ºC and altitudes up to 70,000 feet.

Software for the DNx-AI-224 is provided as part of the UEI Framework. The framework 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, RT Linux and more. Finally, the framework supplies complete support for those creating applications in LabVIEW, MATLAB/Simulink, or any application supporting ActiveX or OPC servers.



  • PowerDNA
  • UEIModbus
  • UEILogger

Related Media

Measuring Output from a Strain Gauge

UEI produces several high speed multichannel input boards for measuring strain gauge quickly, accurately and flexibly. In this video we demonstrate the capabilities of the UEI DNR-AI-224 board and how easy it is to get started. #IO #measurement #labview #sensors #racktangle #flexible #accurate

Learn more about the AI-224 at https://www.ueidaq.com/product...
For a higher density strain gauge board, consider the AI-208: https://www.ueidaq.com/product...

United Electronic Industries Strain Gage I/O Capabilities

UEI's strain gage / gauge boards (layers) are designed for direct measurement of full-, half- and quarter-bridge strain gages, load cells, force sensors, torque sensors as well as any other full-bridge circuitry-based sensors. #IO #circuit #hardware

Explore the products featured in this video:
AI-208: https://www.ueidaq.com/product...
AI-224: https://www.ueidaq.com/product...
AO-358: https://www.ueidaq.com/product...