National Instruments NI-9244 C Series Voltage Input Module

Featured with a dedicated, 24-bit Delta-Sigma type ADC per channel, the National Instruments NI-9244 (Part Number: 783106-01) is a Voltage Input Module. This model offers three single-ended, simultaneously sampled AI channels. The NI-9244 can acquire samples at 50 kS/s per channel and has a broad analog input range of 800 Vrms L-L. This device is offered with screw-terminal connectivity. In typical conditions, it incurs 6 mVrms maximum input noise. For rejecting out-of-band signals effectively, the NI 9244 uses a combination of digital and analog filters – an arrangement to separate signals on basis of their frequency or bandwidth. 

 The NI-9244 supports DC input coupling. The input impedance, Neutral-to-Ground, and AIx-to-Ground remain around 2 MΩ. This Voltage Input Module comes with an integrated protection mechanism, designed to cater 800 Vrms continuous overvoltage and 1000 Vrms for 1 s. Moreover, the NI 9244 has been tested to withstand 8 kV voltage surge for 1.2 µs/50 µs. While operating at 50 kS/s3, the N-Earth and L-Earth input noise encountered remains around 4.22 mVrms, whereas the L-N and L-L input noise remain around 6 mVrms.

The NI-9244 is run using the NI-DAQmx driver software which is compatible with software packages/application development environments (ADEs) such as LabVIEW, LabWindows/CVI, ANSI C, or .NET.

 This Voltage Input Module is a great solution for a broad range of applications as it offers three measurement channels between the natural channel and the signal. Thus, users can couple a variety of single-phase, as well as three-phase measurement configurations with the NI 9244. This hot-swappable module can meet a variety of environment and application needs. The NI-9244 comes with a 12.8 MHz internal master time base. It has a power consumption figure of 332 mW maximum when active, and 50 μW when in sleep mode.

The NI device weighs 5.3 oz, has a recommended operating temperature range of -40 °C to 70 °C, and a storage temperature range of -40 °C to 85 °C. It has a random operating vibration of 5 grms (10 Hz to 500 Hz), and a sinusoidal operating vibration of 5 g (10 Hz to 500 Hz).

The NI-9244 is available to be calibrated. While the recommended calibration period for individual parts varies, most parts should be calibrated either annually or every two years to ensure accuracy. If you need the NI-9244 calibrated, Apex Waves provides options. We offer high-quality NIST accredited calibrations through a 3rd party, with an average turnaround time of 1 to 2 weeks. When you order the NI-9244 with us, you can request basic (unaccredited) in-house calibration that will calibrate the part to the manufacturer specifications prior to being shipped. Call or email us today for more information about calibrating the NI-9244!