发明名称 |
Piezometric ground water pressure sensing apparatus |
摘要 |
<p>This invention provides a piezometric device to measure ground water having a fluid container in which the piezometric element is immersed so that it is permanently saturated. Preferably, an opening above the level of the piezometric element allows fluid in a container to be retained and yet equalized with surrounding ground water to provide pressure readings. This avoids the device becoming unreliable should the water level fluctuate. A releasable seal may be placed over the opening into the container 2 to keep the fluid within the housing during transportation. <IMAGE></p> |
申请公布号 |
EP1256801(A2) |
申请公布日期 |
2002.11.13 |
申请号 |
EP20020253313 |
申请日期 |
2002.05.13 |
申请人 |
LOCAL LINK INTERNATIONAL LIMITED |
发明人 |
TYPSON, JULIAN PETER |
分类号 |
G01L19/06;G01L19/14;(IPC1-7):G01N33/24;G01L9/08;E21B47/06;G01L9/00 |
主分类号 |
G01L19/06 |
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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