| 摘要 |
<p>A super-precise micro-differential pressure measuring device capable of continuously measuring a micro-differential pressure with high accuracy by transmitting micro-differential pressure to an electronic weighing /pressure transducing device without passing any mechanical sliding part, simplifying the structure, and largely lowering production cost. Specifically, the super-precise micro-differential pressure measuring device comprises a device body (1) having a space part therein, a pressure receiving plate (3) disposed in the internal space of the device body (1) and dividing airtight the internal space into a lower space (7) and an upper space (8), the electronic weighing /pressure transducing device (2) disposed in the lower space (7) and having the pressure receiving plate (3) fixedly supported thereon, and a liquid sealing part (R) liquid-sealing the outer peripheral edge part of the pressure receiving plate (3) to hold airtightness between the lower space (7) and the upper space (8). A micro-differential pressure between a pressure (P1) in the upper space (8) and a pressure (P2) in the lower space (7) is measured by the electronic weighing /pressure transducing device (2) through the pressure receiving plate (3).</p> |
