The National Instruments NI-9203 is a sophisticated C Series Current Input Module designed for high-performance monitoring and control applications. This module features eight single-ended analog input channels, each offering a 16-bit resolution and capable of acquiring samples at a rate of up to 200 kS/s. It supports a current measurement range from -20 mA to 20 mA and is equipped with variable connectivity options, including programmable input ranges tailored to diverse application needs. To ensure operational reliability, the NI-9203 incorporates a 250 Vrms channel-to-ground dual isolation barrier to protect against signal transients and provides integrated overvoltage protection for each channel, rated at ±30 V.

This module is available in three configurations: Standard Screw Terminal (Part Number: 779516-01), Spring Terminal (Part Number: 783731-01), and Conformal Coated Screw Terminal (Part Number: 779516-02), with the latter offering enhanced moisture protection through conformal coating. The NI-9203's input circuitry employs a single 16-bit successive approximation ADC, which buffers, conditions, and samples the incoming signals with a typical gain error of ±0.04% and an offset error of ±0.02% within a temperature range of 25 °C ±5 °C. This module operates with a maximum power consumption of 399 mW in active mode and 5 mW in sleep mode, ensuring efficient performance. When integrated with an R Series Expansion Chassis, the minimum conversion time is 5.2 μs.

Designed for versatility, the device utilizes NI-DAQmx 9.2 driver software, making it compatible with various software packages and application development environments, including LabVIEW, LabWindows/CVI, C/C++, C#, and Visual Basic .NET. Configuration of the hardware can be efficiently managed through the Measurement & Automation Explorer (MAX) tool. The recommended operating temperature range for the NI-9203 is -40 to 70 °C, and the module is backed by a three-year warranty. User manuals and maintenance documentation are available for download. For pricing information, please contact a National Instruments sales representative.