发明名称 |
Monitoring device for a chemical reagent supply system |
摘要 |
A monitoring device for a chemical reagent supply system includes a position voltage generator, mounted to a pump of the supply system, to monitor the expansion state of a bellows. The actual outflow of the chemical reagent is calculated by the position voltage generator. According to a demand signal from equipment needing the chemical reagent, which is processed to consider the viscosity of the chemical reagent, a theoretic demand outflow is calculated by the monitoring device. When the difference between the actual outflow and the theoretic demand outflow exceeds a permissible tolerance, the monitoring device raises an alarm signal to warn an operator and thereby to assure the accuracy of the chemical reagent supply system.
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申请公布号 |
US5844490(A) |
申请公布日期 |
1998.12.01 |
申请号 |
US19970844762 |
申请日期 |
1997.04.22 |
申请人 |
UNITED MICROELECTRONICS CORP. |
发明人 |
LU, CHUNG-CHIEN;LIU, ERIC;LEE, HIS-HUANG;LU, TIEN-TSAI |
分类号 |
B01F15/00;(IPC1-7):G08B21/00 |
主分类号 |
B01F15/00 |
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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