Thanks again George,
I tried your library, neat, but same result. I'm now convinced its hardware problem rather than software. I love to hear from anyone who has successfully used a MAX 31855T with a T Type as I'm beginning to suspect the chip as both the the BBetch and Playing with Fusion breakouts give similar results, the common factor being the MAXIM chip. Or perhaps its the way I've wired it - did your K Type set up work OK on a breadboard?
I suspected perhaps a mis-labelled thermocouple, was a K type masquerading as a T type? I tried a brand new one. Nope same thing.
I wish I could use a K Type, but the application demands a T type.
Thanks for your post....