发明名称 |
Hydrologic data acquisition system |
摘要 |
An apparatus records fluid level movement using a potentiometer that is rotated by a tape attached to a float and a counterweight. The output from the potentiometer is recorded by a microprocessor which is presettable for desired time intervals. Static friction in the moving parts causes small fluid displacement to go unrecorded until they accumulate to produce a larger rotation of the potentiometer, resulting in inaccurate data recording termed "staircasing." To overcome staircasing, before a reading is taken, an impactor made up of a solenoid with a spring-loaded core impacts the tape with sufficient magnitude such that the resultant movement and oscillation of the tape will overcome the static friction, resulting in a smooth, accurate data record.
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申请公布号 |
US4720799(A) |
申请公布日期 |
1988.01.19 |
申请号 |
US19850746603 |
申请日期 |
1985.06.19 |
申请人 |
WOITHE, STANLEY D.;DILLON, PETER J. |
发明人 |
WOITHE, STANLEY D.;DILLON, PETER J. |
分类号 |
G01F23/44;(IPC1-7):G01F23/00;G06F15/20 |
主分类号 |
G01F23/44 |
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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