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JOURNAL OF MECHANICAL ENGINEERING  > 2017  >  31(6): 56-61.
Wang Haoli, Wang Bing. Research of the measurement method for the pressure distribution along the micro/mini-channel[J]. JOURNAL OF MECHANICAL ENGINEERING, 2017, 31(6): 56-61. doi: 10.11729/syltlx20170050
Citation: Wang Haoli, Wang Bing. Research of the measurement method for the pressure distribution along the micro/mini-channel[J]. JOURNAL OF MECHANICAL ENGINEERING, 2017, 31(6): 56-61. doi: 10.11729/syltlx20170050
shu

Research of the measurement method for the pressure distribution along the micro/mini-channel

doi: 10.11729/syltlx20170050
  • Received Date: 25 Apr 2017
  • Rev Recd Date: 21 Jun 2017
    Abstract
  • In this study, a system was designed and built up for the pressure measurement along micro/mini-channel, which mainly includes micro/mini-channel and square pressure cavities on PMMA chip, micro-strain sensors and multi-channel strain instruments. The static pressure in micro/mini-channel was provided by the syringe pump, and the high precision pressure values measured by the micromanometer of FCO510 was employed as the standard pressure. The strain values from the strain sensors installed on the square pressure cavities were obtained by multi-channels strain gauge, and the calibration functions between the standard pressure and the strain were established. The pressure distributions of three kinds of micro pressure chips were measured under flow rates of 80, 70, 60 and 50mL/min, respectively. The pressures have good linear distribution.The uncertainty analysis indicates that the relative uncertainty of the pressure error is between 0.15% and 6.82%. The validity and reliability of pressure measurement are high.

     

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