发明名称 |
Flow sensing apparatus |
摘要 |
A method and apparatus for monitoring and controlling the nano-scale flow rate of fluid in the operating flow path of a HPLC system. A first flow sensor is disposed in a first flow path between a first flow-divider and a fluidic tee. A second flow sensor is disposed in a second flow path between a second flow-divider and the fluidic tee. A first recycle flow restrictor is disposed in the first recycle flow path in fluid communication with the first flow-divider. A second recycle flow restrictor is disposed in the second The permeability of each recycle flow restrictor can be selected to produce a desired flow rate with each respective flow path. The output signals of the first and second flow sensors to control output of a pump within each flow path.
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申请公布号 |
US7186336(B2) |
申请公布日期 |
2007.03.06 |
申请号 |
US20040851497 |
申请日期 |
2004.05.21 |
申请人 |
WATERS INVESTMENTS LIMITED |
发明人 |
GERHARDT GEOFF C.;LUONGO JOSEPH A. |
分类号 |
B01D15/08;G01F1/36;G01F1/68;G01N30/10;G01N30/30;G01N30/32 |
主分类号 |
B01D15/08 |
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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