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NI USB Machine Condition Monitoring (MCM) System
Recommended Transducers
Many manufacturers offer a wide range of microphones, accelerometers, and other transducers for your specific application. Listed below are selected transducers from manufactures G.R.A.S. Sound and Vibration and PCB Piezotronics.
Microphones
National Instruments recommends pre-polarized microphones and constant current powered (CCP) preamplifiers for use with NI devices that provide IEPE (Integrated Electronic Piezo-Electric) signal conditioning.
National Instruments recommends piezoelectric or ICP ® type accelerometers for use with NI devices that provide IEPE (Integrated Electronic Piezo-Electric) signal conditioning.
ICP ® is a registered trademark of PCB Piezotronics.
The NI USB machine condition monitoring (MCM) system is a complete sound and vibration solution for portable machine diagnostics and online machine condition monitoring. This system monitors assets including the following:
Turbines
Generators
Compressors
Blowers
Pumps
Motors
Boilers
Piping
Valves
Software
The NI USB MCM system comes with the easy-to-use NI Sound and Vibration Measurement Suite, which is the most comprehensive collection of NI analysis and signal processing tools for MCM. This software contains analysis functions including spectral analysis, level measurements, order analysis, waterfall plots, order tracking, shaft centerline measurements, and Bode plots.
Hardware
The NI USB MCM system features 16 accelerometer/microphone input channels, four proximity probe input channels, and eight tachometer input channels. However, the system is configurable for any combination of up to 32 channels. The accelerometer/microphone channels offer software-selectable IEPE signal conditioning, 24-bit resolution, 102 dB dynamic range, 51.2 kS/s maximum simultaneous sampling, and antialiasing filters. The system also provides mixed-measurement capability for temperature, strain, voltage, and other process variables.
The NI USB MCM system is based on the NI CompactDAQ platform, which offers the plug-and-play simplicity of USB to sensor and electrical measurements on the benchtop, in the field, and on the production line. By combining the ease of use and low cost of a data logger with the performance and flexibility of modular instrumentation, NI CompactDAQ delivers fast and accurate measurements in a small, simple, and affordable system.
