发明名称 |
Filter monitoring system |
摘要 |
A fluid filter monitoring system includes a filter relief valve movable in response to a pressure buildup caused by filter clogging to sequentially actuate a pair of pressure-operated switches. A temperature sensor senses the temperature of fluid in the hydraulic system. A control unit, including a microprocessor, controls the energization of a plurality of indicators, depending upon the status of the temperature sensor, the pressure-operated switches and the duration of actuation of the switches.
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申请公布号 |
US4500874(A) |
申请公布日期 |
1985.02.19 |
申请号 |
US19820378703 |
申请日期 |
1982.05.17 |
申请人 |
DEERE & COMPANY |
发明人 |
JACOBI, STEPHEN F.;HAIGHT, ROBERT E.;SCHLETZBAUM, JOHN W.;MARTIN, YOLANDA E.;LANG, STEPHEN P. |
分类号 |
G01P13/00;(IPC1-7):G08B21/00 |
主分类号 |
G01P13/00 |
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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