| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid mixer which can mix fluid in each line at an optional ratio by controlling fluid in another feed line so that a real ratio of a real flow rate of a feed line that is not F/B controlled to a real flow rate of a feed line that is F/B controlled becomes constant at a set ratio, is compact and can be easily connected and can control even pulsating fluid. SOLUTION: A first flow meter (3) measures and outputs the real flow rate in one feed line (1). A second flow meter (4) measures and outputs the real flow rate in another feed line (2) which is equipped with a second fluid controlling valve (5) for controlling a flow rate by changing an opening area of a flow passage. A controlling section (6) outputs a command signal for controlling the opening area of the second fluid controlling valve based on deviation between a real ratio of two measured values and a set ratio of them to the second fluid controlling valve or an instrument for operating the second fluid controlling valve. An opening/closing valve (14) can be added to each line (1, 2) and a pressure regulating valve (23) can be added to another feed line (2). COPYRIGHT: (C)2008,JPO&INPIT
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