National Instruments has released a small, rugged dynamic signal analyser built on NI reconfigurable input/output (RIO) hardware.
The new cRIO-4408 DSA is a 24-bit, eight-channel data acquisition device for making sound and vibration measurements from integrated electronic piezoelectric (IEPE) sensors. Because of its compact size, ruggedness and Ethernet communication, the device is suitable for embedded machinery monitoring applications in harsh environments.
The device delivers 102dB dynamic range and IEPE signal conditioning for accelerometers and microphones, as well as eight input channels that simultaneously acquire at rates from 2 to 33.3kS/s – up to 50kS/s for four channels. In addition, it offers communication through standard 10/100 Ethernet and built-in analogue and digital anti-aliasing filters that automatically adjust according to the sampling rate.
Because the device includes an example National Instruments LabVIEW program that details the required TCP/IP communication, engineers simply plug in the device and assign it an IP address to begin acquiring data.
Engineers can use the cRIO-4408 DSA with NI software, including the NI LabVIEW Sound and Vibration Toolkit and LabVIEW Order Analysis Toolkit, to calculate weighted sound level, integrated vibration level, baseband and zoom FFTs, fractional octave analysis, frequency response, order tracking and order spectra.
The platform combines an open, embedded architecture with small size, ruggedness and dc power. CompactRIO systems have a -40 to 70°C temperature range and 50g shock rating.
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