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<div dir="ltr" data-setdir="false">There are a lot of good articles on galvanic O2 sensors available and I've downloaded a couple to the PSUBS website for reference. PSUBS.ORG -> Resources & Reference -> References -> Sensors</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">If anyone finds others that are worthy, let me know and I'll add them. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div></div></body></html>