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DAQ Plan for Pressure Testing: Strategies and Equipment Overview

This document outlines the data acquisition (DAQ) plan for conducting pressure tests in a laboratory setting, featuring an extensive list of equipment, software, and methodologies employed. Key tools include National Instruments hardware, LabVIEW software for multichannel logging, and various Keithley instruments. The system is designed to read data from strain gauges and other channels with precision, aiming for synchronized measurements to analyze performance and detect anomalies. The collected data will be analyzed post-test to assess measurements and possible structural failures.

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DAQ Plan for Pressure Testing: Strategies and Equipment Overview

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  1. DAQ for Pressure Test,and later... Michael J. Haney University of Illinois m-haney@uiuc.edu Absorber Review Meeting at NIU

  2. 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) Absorber Review Meeting at NIU

  3. Enroute to UofI • National Instruments PCI-GPIB • and cables for 3 peripherals • GPIB software • Labview .VI’s (work in progress) • multichannel logger • file reader Absorber Review Meeting at NIU

  4. Enroute (elsewhere) ? • Keithley 220 current source • Keithley 7001 switch • Keithley 2001 multimeter • all are GPIB peripherals Absorber Review Meeting at NIU

  5. 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 Absorber Review Meeting at NIU

  6. 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 Absorber Review Meeting at NIU

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