发明名称 |
Marine seismic streamer with depth sensor calibrating means |
摘要 |
A marine seismic streamer section for a towed underwater streamer containing a buoyancy regulating fill liquid and the usual hydrophones, strain cables, signal wires and the like housed in a generally cylindrical tubular jacket sealed at its ends against loss of fill liquid and containing a depth sensor for producing electrical signals indicative of the depth of the streamer. The sensor is in a rigid housing whose interior is connected by a tube to a valved calibrating chamber having a valve member normally communicating the interior of the depth sensor housing to the fill liquid pressure conditions in the jacket. The chamber has an external access port normally closed by a plug, and the valve member is movable by a probe inserted through the port when the plug is removed and a source of gauged pressure connected to the access port to subject the interior of the depth sensor housing to the gauged pressure source.
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申请公布号 |
US4135141(A) |
申请公布日期 |
1979.01.16 |
申请号 |
US19770773413 |
申请日期 |
1977.03.01 |
申请人 |
WHITEHALL CORPORATION |
发明人 |
CALDWELL, STEPHEN A.;MASSEY, RANDALL R. |
分类号 |
G01V1/20;G01V1/38;G01V13/00;(IPC1-7):G01V1/38;B63B21/56 |
主分类号 |
G01V1/20 |
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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