发明名称 |
HIGH PURITY CORIOLIS MASS FLOW CONTROLLER |
摘要 |
A mass flow measurement and control device (100) includes an enclosure (101) with a Coriolis mass flowmeter (50, 112) situated therein. The Coriolis mass flowmeter (50, 112) has a flow-tube made of a high-purity plastic material, a driver (D) coupled to the flow tube for vibrating the flow tube, and a picko ff coupled to the flow tube for sensing Coriolis deflections of the vibrating flow tube (52). A pinch valve (110, 120) includes an elastomeric tube (126) made of a high-purity plastic material in fluid communication with the flow tube. An actuator (122) with a ram (124) operatively connected thereto is situated adjacent to the elastomeric tube (126), and a reference surface (12 8) is positioned generally opposite the ram such that the elastomeric tube is squeezable between the ram and the reference surface. A controller (114) may also be provided, which receives an output signal from the Coriolis flowmete r (50, 112) and provides a control output signal to the pinch valve actuator (112) in response to the flowmeter output signal and a setpoint signal.</SDO AB> |
申请公布号 |
CA2463035(C) |
申请公布日期 |
2008.12.30 |
申请号 |
CA20022463035 |
申请日期 |
2002.11.25 |
申请人 |
EMERSON ELECTRIC CO. |
发明人 |
PAWLAS, GARY E.;SCOTT, TIMOTHY W.;SUND, WESLEY E.;WHEELER, MATTHEW G.;WHITELEY, JEFFREY L.;DILLE, JOSEPH C.;BARGER, MICHAEL J.;MCNULTY, DANIEL P. |
分类号 |
G05D1/00;G05D7/06;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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