Thanks so much for your help. The link you posted got me pointed in the right direction, but still doesnt really solve my problem. It did narrow down my target area though. The PT 100 RTDs that I got (sourced from Brewer's Hardware) have 3 different colored wires. Everything I can find says they should have 2 similar colored wires and one different color wire.
I have contacted the supplier for clarification.
However thanks to all the other very helpful information I found out that the TA4 Mypin PIDs do not have a manual mode, and therefore will not work for my BK....off i go to buy a new one