Apparatus for measuring and recording data from boreholes
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United States of America Patent
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Jan 18, 2005
Issued Date -
N/A
app pub date -
Dec 30, 2002
filing date -
Sep 18, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For collecting data from a water well, down-hole sensors are housed in modules. The modules are arranged to be screwed together in-line to form a vertical string. Mechanically, the modules are secured to each other only by the screw connection. Data is transmitted to the surface on a 2-wire cable, there being no other electrical connection between the modules and the surface. The modules are connected in multi-drop configuration to the 2-wire cable. Data is transmitted using time-division multiplexing.
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