Measuring device for minute flow rate |
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| 申请号 | JP4560383 | 申请日 | 1983-03-18 | 公开(公告)号 | JPS59171816A | 公开(公告)日 | 1984-09-28 |
| 申请人 | Oval Eng Co Ltd; | 发明人 | YAMAMOTO HIROSHI; NOZAKI KAZUO; TSUCHIYA HIROYA; UMEDA NOBUYOSHI; | ||||
| 摘要 | PURPOSE:To measure accurately a minute flow rate from the number of droplets which forms a discontinuous flow, by using a dripping device so as to maintain the volume of a dripped liquid at a prescribed amount in a wide range of a dripping speed. CONSTITUTION:A storing vessel 1 for a liquid to be measured is provided, by insertion, with an inlet pipe 2 communicating with the outside air through filter 3, and an outlet pipe 4 communicating in the lower part with a dripping pipe 6. The inlet pipe 2 is provided for introducing the outside air corresponding to the liquid to be measured which flows out from the outlet pipe 4, and the other opening thereof is positioned at the top of the vessel 1. To the contrary, the other end of the outlet pipe 4 is opened in the bottom part of the vessel 1. The dripping pipe 6 is joined to the lower end of the outlet pipe 4 and opened in a measuring vessel 7, and drips a droplet 11. In the vessel 7, electrodes 8 are disposed at a distance from the lower part of the dripping pipe 6 at which the droplet is separated from the pipe 6, and with a gap smaller than the droplet between them. If the droplet is a conductive liquid, a circuit between an integrator 13 and a power source 14 is closed when the droplet passes the gap between the electrodes 8, and this passage of the droplet is integrated. | ||||||
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