发明名称 |
Fluid flow rate measuring and controlling apparatus and method for using same |
摘要 |
A volumetric flow control apparatus and method for measuring and controlling the volumetric flow rate and flow volume of a fluid. The apparatus comprises a reciprocating diaphragm meter having a diaphragm mounted for reciprocating movement and a diaphragm position indicator assembly for monitoring the position of the diaphragm as it reciprocates. As a fluid under pressure passes through the reciprocating diaphragm meter the diaphragm reciprocates through at least one meter cycle during which the meter passes a fixed volume of fluid per meter cycle. A timer responsive to the diaphragm position indicator is provided to measure the elapsed time for the meter diaphragm to reciprocate through at least one meter cycle. A processor calculates the volume flow rate of the fluid passing through the reciprocating diaphragm meter by dividing the fixed volume of fluid passed by the meter in a meter cycle by the elapsed time measured during the meter cycle. The volume flow rate of fluid passing through the reciprocating diaphragm meter is controlled by a controller which compares the measured flow rate to a desired flow rate and then causes the pressure differential across the reciprocating diaphragm meter to be changed to increase or decrease the fluid flow rate.
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申请公布号 |
US5526685(A) |
申请公布日期 |
1996.06.18 |
申请号 |
US19950373589 |
申请日期 |
1995.01.17 |
申请人 |
GRASEBY ANDERSEN INC. |
发明人 |
DAVIS, HOMER W. |
分类号 |
G01F3/22;(IPC1-7):G01F3/20 |
主分类号 |
G01F3/22 |
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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