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Untitled
One of the better publications describing the EGT that we have seen was put out by Alcor Inc., P. O. Box 792222 of San Antonio, Texas 78279-2222. This excellent booklet is titled, "EGT and Combustion Analysis In A Nutshell", and is available free to interested operators.
I suggest you put a request in here... sure they can provide a link or possibly email a copy!
Regards,
Vin