发明名称 |
Electromagnetic flowmeter for conductive and dielectric fluids and its applications in particular in oilfield. |
摘要 |
<p>The invention is a non-intrusive system for measuring the flow rates of insulating or conducting fluids in conduits. It results from the combination of an electromagnetic flowmeter, operating with conducting fluids, and of a triboelectric noise cross-correlation flowmeter, operating with insulating fluids. The system is equipped with a non-intrusive device for measuring fluid conductivity. The electronic signal processing unit uses the conductivity value to decide which of the two sensors is providing a signal effectively representing the fluid flow rate. The electromagnetic flowmeter may use electrodes of small cross-section in contact with the fluid or, more advantageously, it may be of the capacitive type using larger section electrodes isolated from the fluid.</p> |
申请公布号 |
EP0274768(A1) |
申请公布日期 |
1988.07.20 |
申请号 |
EP19870202079 |
申请日期 |
1987.10.29 |
申请人 |
PUMPTECH N.V. |
发明人 |
CODAZZI, DANIEL;MIOQUE, JEAN-YVES;MONTARON, BERNARD |
分类号 |
G01F1/58;G01F1/64;G01F1/712;(IPC1-7):G01F1/56 |
主分类号 |
G01F1/58 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|