Intrinsically safe field maintenance tool with power islands
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United States of America Patent
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Mar 31, 2009
Grant Date -
Nov 4, 2004
app pub date -
Apr 30, 2003
filing date -
Apr 30, 2003
priority date (Note) -
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Abstract
A hand held configuration for coupling to a two wire process control loop for use in configuring and monitoring field units coupled to the two wire process control loop is provided which includes a power supply, and at least two power islands. The power islands are configured to electrically isolate electrical components in one power island from electrical components in another power island. Independent power connections are provided between each power island and the power supply.
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