| 摘要 |
PURPOSE: An apparatus for generating and measuring micro pressure is provided to generate the micro pressure due to a height difference between pressure vessels by connecting the pressure vessels with a ball screw and a stepping motor. CONSTITUTION: An apparatus for generating and measuring micro pressure includes a first pressure vessel(11) and a second pressure vessel(12), a driving unit, a micro manometer(70), a float(20), a laser diode(31), a photo detector(32), and a digital display panel(81). Herein, the first pressure vessel(11) and the second pressure vessel(12) contain the same liquid having a predetermined liquid pillar and have a coupling hose allowing the liquid to move such that the height difference between liquid pillars of the first pressure vessel(11) and the second pressure vessel(12) is adjusted. Also, the micro manometer is connected to corresponding ports of upper parts of the first pressure vessel(11) and the second pressure vessel(12) in order to detect and display the micro pressure. The laser diode(31) applies laser to a weight balance(21) of the float(20). The photo detector(32) detects a height difference of the float(20) of the first pressure vessel(11) and the second pressure vessel(12). The digital display panel(81) displays the height difference of the float(20).
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