National Instruments PCI-4474

The National Instruments PCI-4474 is a high-performance Sound and Vibration Device designed for precision measurements in sound and vibration analysis applications. Featuring four simultaneously sampled pseudodifferential analog input channels with 24-bit delta-sigma ADCs, the PCI-4474 allows for programmable sampling rates, reaching a maximum of 102.4 kS/s. This device achieves a dynamic range exceeding 110 dB at a sampling rate of 51.2 kS/s, making it ideal for demanding applications.

The advanced delta-sigma modulation technology employed in the PCI-4474 ensures low noise and distortion, with one-bit quantization oversampled at various predefined rates to facilitate exceptional linearity. Integrated low-pass digital filters help eliminate quantization noise within the desired band of interest, further enhancing measurement accuracy. The device is well-suited for analyzing dynamic signals from powered systems such as turbines, motors, pumps, and blowers, and enables online processing for flexible applications in condition-based monitoring and predictive maintenance.

Equipped with software-selectable AC/DC coupling, a 3.4 Hz high-pass filter cutoff frequency, and SMB front connectors, the PCI-4474 simplifies integration into existing setups. It operates with the NI-DAQmx driver software, ensuring compatibility with popular software environments like LabVIEW and Measurement Studio. The device, weighing 6.5 oz and measuring 6.9 x 4.2 inches, has a recommended operating temperature range of 0 to 50 °C and supports an operating random vibration of 5 to 500 Hz (0.3 grms).

Though the PCI-4474 is no longer produced, it is still available for purchase and repairs through Apex Waves. For optimal performance, a warm-up time of 15 minutes is recommended, along with annual external calibration. A three-year warranty is provided, and user and maintenance manuals are available for download. For pricing inquiries, please contact a sales representative.