发明名称 |
HIGH PURITY CORIOLIS MASS FLOW CONTROLLER |
摘要 |
A mass flow measurement and control device includes an enclosure with a Coriolis mass flowmeter situated therein. The Coriolis mass flowmeter has a flow-tube made of a high-purity plastic material, a driver coupled to the flow tube for vibrating the flow tube, and a pickoff coupled to the flow tube for sensing Coriolis deflections of the vibrating flow tube. A pinch valve includes an elastomeric tube made of a high-purity plastic material in fluid communication with the flow tube. An actuator with a ram operatively connected thereto is situated adjacent the elastomeric tube, and a reference surface is positioned generally opposite the ram such that the elastomeric tube is squeezable between the ram and the reference surface. A controller may also be provided, which receives an output signal from the Coriolis flowmeter and provides a control output signal to the pinch valve actuator in response to the flowmeter output signal and a setpoint signal. |
申请公布号 |
US2003097884(A1) |
申请公布日期 |
2003.05.29 |
申请号 |
US20010995174 |
申请日期 |
2001.11.26 |
申请人 |
SUND WESLEY E.;MCNULTY DANIEL P.;SCOTT TIMOTHY W.;WHEELER MATTHEW G.;WHITELEY JEFFREY L.;DILLE JOSEPH C.;BARGER MICHAEL J.;PAWLAS GARY E. |
发明人 |
SUND WESLEY E.;MCNULTY DANIEL P.;SCOTT TIMOTHY W.;WHEELER MATTHEW G.;WHITELEY JEFFREY L.;DILLE JOSEPH C.;BARGER MICHAEL J.;PAWLAS GARY E. |
分类号 |
G05D1/00;G01F1/84;G05D7/06;(IPC1-7):G01F1/84 |
主分类号 |
G05D1/00 |
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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