公开(公告)号：US4907459A

公开(公告)日：1990-03-13

申请号：US321242

申请日：1989-03-09

申请人： Yasuo Tada ,  Akinori Akazawa

发明人： Yasuo Tada ,  Akinori Akazawa

IPC分类号： G01F1/32

CPC分类号： G01F1/3263 ,  G01F1/329

摘要： A vortex flow meter comprises a first diaphragm which divides a first and a second pressure chamber from each other; a second diaphragm which divides a third and a fourth pressure chambers from each other; a first and a second bridge circuits which receive the action of the first and the second diaphragms, respectively; a first and a second variable amplifiers which amplify the outputs from the first and the second bridge circuits, respectively; and a differential amplifier which receives the outputs made by the first and the second variable amplifiers, inverse to each other in polarity and nearly equal to each other in magnitude.

摘要翻译： 涡流流量计包括将第一和第二压力室彼此分开的第一隔膜; 将第三和第四压力室彼此分开的第二隔膜; 分别接收第一和第二隔膜的作用的第一和第二桥接电路; 第一和第二可变放大器，分别放大来自第一和第二桥接电路的输出; 以及差分放大器，其接收由第一和第二可变放大器产生的输出，其极性彼此相反并且在大小上彼此几乎相等。