National Instruments NI-9247

The National Instruments NI-9247 is a robust C Series Current Input Module featuring three isolated analog input channels with a simultaneous sample rate of 50 kS/s per channel. Designed specifically for use with 1 A and 5 A nominal current transformers (CTs), the NI-9247 facilitates direct ring lug connectivity, making it an ideal solution for continuous alternating current (AC) measurements across various energy and industrial applications such as machine monitoring, power quality assessments, and power metering. This module supports a measurement range of 50 Arms, with the capability to handle instantaneous measurements up to 100 Arms and ±147 Apeak. Each channel measures currents with positive polarity through its AI+ and AI- terminals, which are clearly labeled on the module for user convenience.

The NI-9247 is engineered for complete electrical isolation among channels, featuring isolation ratings of 480 Vrms between channels and 300 Vrms to Earth. These specifications enable the module to perform direct measurements at line voltages up to 277 V/480 V, ensuring safety and reliability in demanding environments. It is essential to note that this module is intended solely for AC measurements and does not accommodate DC current readings. Advanced applications leverage the capabilities of the NI-9247 for phasor measurements, harmonic analysis, and fundamental frequency determinations using algorithms available in the LabVIEW Electrical Power Suite.

Operating within a temperature range of -40 °C to 70 °C, the NI-9247 is suited for a variety of harsh environments, while also maintaining durability against vibrations with ratings of 5 grms and 5 g across a frequency spectrum of 10 to 500 Hz. Weighing 8.75 oz., this module is operated through the NIDAQmx driver software, compatible with platforms such as LabVIEW, LabWindows/CVI, and Visual Basic .NET. Each purchase includes a three-year warranty, and both the User Manual and Maintenance Manual are available for download. For pricing inquiries, please contact a National Instruments sales representative.