DAQ for Pressure Test, and later...

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DAQ for Pressure Test,and later...

• Michael J. Haney
• University of Illinois
• m-haney_at_uiuc.edu

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In Hand at UofI

• 1 GHz PC, 512M RAM, 20G disk
• Labview, NI-DAQ
• 3 National Instruments PCI-MIO-16E-1
• 1.25 MS/s, 12 bit ADC
• 16 SE / 8 Diff analog input channels
• 100mV - 10V (FS) programmable gain range
• 11V max CM 25V OVP (on)

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Enroute to UofI

• National Instruments PCI-GPIB
• and cables for 3 peripherals
• GPIB software
• Labview .VIs (work in progress)
• multichannel logger
• file reader

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Enroute (elsewhere)
?

• Keithley 220 current source
• Keithley 7001 switch
• Keithley 2001 multimeter
• all are GPIB peripherals

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DAQ Plan for Pressure Test

• every millisecond
• read (up to) 24 stain gauges
• via PCI-MIO-16E-1 boards
• common-mode permitting...
• every second
• read strain gauges, pressure, flow
• all (40) channels
• via Multimeter/GPIB

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DAQ Plan for Pressure Test(continued)

• Spool everything to a file
• 10 GB / (24 12 bits 1 KHz) 77 hours
• start and stop are moot...
• Analyze later
• find quasi-static measurements between fills
• look for vibrations
• examine rupture