发明名称 |
Automatic fluid metering equipment - has inflowing air jet with anemometer circuit resistance controlling fluid outlet valve |
摘要 |
<p>The equipment automatically meters quantities of fluid, having a vessel accommodating the fluid with a bottom outlet and valve. The vessel (10) has a top cover (15) with an inlet union (21) for pressure equalisation by means of inflowing air. There is a jet-type opening (20) of predetermined cross-section in the union. It contains the resistance unit (30) of an anemometer circuit (40). At the output of this a voltage appears proportional to the flow speed and thus to the quantity of air, and is fed to the input of an analogue/frequency converter, emitting an alternating voltage or a succession of impulses of frequency proportional to this voltage. This is supplied toa counter circuit (60) for comparison with a reference value predetermined by an adjuster (70). The output of the counter circuit supplies a circuit (80) controlling the electrically-operated outlet valve (12).</p> |
申请公布号 |
FR2442434(A1) |
申请公布日期 |
1980.06.20 |
申请号 |
FR19780033472 |
申请日期 |
1978.11.27 |
申请人 |
DART AUSSCHANK RATIONALI TECHNIK |
发明人 |
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分类号 |
G01F1/00;G01F1/68;G01F11/00;G01F11/28;G01F13/00;(IPC1-7):01F1/68;01F11/00;67D3/00 |
主分类号 |
G01F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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