发明名称 |
Method and system for measurement of liquid level in a tank |
摘要 |
The computer based remote tank telemetry system uses a method for updating a prior collected average level of substance in a tank. It continuously determines values of differential pressure within the tank and in accordance with the values of differential pressure determines the instantaneous level of substance within the tank. A prior collected average level is stored and is compared with each of the instantaneous values of level thus obtained. On the basis of this comparison a relative weighing factor is determined which weighs the relative contribution of the collected and instantaneous values in determining a new collected value. The new collected average is compared against a predetermined setpoint to determine whether the level of substance in the tank is too low. The results of this comparison can be displayed locally, and using a modem, communicated to a remote display. The method for determining the relative weighing factor has three tiers. The selection of the required tier is done in accordance with the levels compared.
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申请公布号 |
US4602344(A) |
申请公布日期 |
1986.07.22 |
申请号 |
US19840664817 |
申请日期 |
1984.10.25 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
FERRETTI, MICHAEL D.;GABEL, BRIAN L.;HORTON, JAMES A. |
分类号 |
G01F23/16;(IPC1-7):G01F23/00;F15B5/00 |
主分类号 |
G01F23/16 |
代理机构 |
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