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Data Acquisition System

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The Data Acquisition System consists of a heavy duty computer equipped with specialized modules such as:

  • National Instruments AT-MIO-64E-3 data acquisition board with 64 analogue input channels, 12 bit A/D converter, max. speed  500,000 conversions per sec., 2 analogue outputs, digital inputs/outputs, counters / timers
  • Keithley Metrabyte PIO - 96 digital input / output board.
  • Keithley Metrabyte REL - 16 W relay board

 

The signal conditioners / amplifiers / filters are of the following types:

  • MOXON SRC signal conditioners, constant voltage excitation 0 - 10 VDC (cont. adjustable), regulation : 0.005% FS, constant current excitation 1 - 50 mA (cont. adjustable), regulation : 0.01% FS, balance adjustment: 0.01% resolution;
  • SCXI - 1120 National Instruments isolation amplifiers, gains: 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000,  0.15% gain accuracy, low - pass filters  4 Hz or 10 kHz, ±5V output;
  • SCXI - 1121 National Instruments isolation amplifiers with excitation, the same as SCXI-1120 plus: constant current 0.15 mA ± 0.04% or 0.45 mA ± 0.2%, max. load 10 kW, or constant voltage  3.333 V ±0.04% at   28 mA or 10 V ± 0.2% at  14 mA;
  • SCXI - 1141 National Instruments anti-aliasing filters, programmable cut-off frequency from 10 Hz  to  25 kHz and programmable gain  from  1  to  100.

 

The system software consists of on-line programs for Wind Tunnel control and data acquisition and  extensive after run data reduction and presentation software.


Last Updated on Wednesday, 31 March 2010 11:01  

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