The National Instruments NI-9239 is a high-performance 24-bit, 4-channel voltage input module designed for use within the C Series framework. This module operates over a voltage input range of -10 V to 10 V and features a maximum sampling rate of 50 kS/s for each channel, making it suitable for a wide variety of measurement applications. It is available in several configurations: part number 779593-01 includes screw terminal connectors, part number 782402-01 also features screw terminal connectors with an additional conformal coating for enhanced protection, and part number 780181-01 is equipped with BNC connectors. Additionally, part number 192580-51 represents the OEM/analog input version of the NI-9239.

The screw terminal versions provide 250 Vrms analog input isolation on a channel-to-channel basis, while the BNC version offers 60 VDC channel-to-channel isolation, ensuring protection against voltage surges and minimizing ground loop-related measurement errors. The NI-9239 is an optimal choice for general-purpose applications due to its combination of sampling rate, input range, resolution, speed, and accuracy. It operates with NI-DAQmx driver software, compatible with various application development environments, including LabVIEW and Microsoft Visual Studio.

With power consumption of 740 mW for screw terminal models and 800 mW for the BNC version during active operation, the module boasts robust surge protection, rated to withstand up to 1,390 V, along with 250 Vrms continuous channel-to-earth ground isolation for the screw terminal model and 60 VDC for the BNC variant. The module's dimensions are compact, weighing 5.2 oz for the screw terminal version and 6.0 oz for the BNC version. It functions effectively within a temperature range of -40 °C to 70 °C and can endure storage temperatures from -40 °C to 85 °C, in addition to tolerating operating vibrations of 5 grms and 5 g at frequencies from 10 to 500 Hz. The NI-9239 is backed by a three-year warranty, and user and maintenance manuals are readily available for download. For pricing information, please contact a sales representative.