This post got me to thinking...

There's one measurement I've never taken on thermocouples and thermopiles. Guess I've always diagnosed the prob by checking voltage output under various load conditions (no load, pilot only, pilot and main open)
I've never thought to check the resistance.

Hope I dont' forget..... I'll check the resistance on a good thermopile and thermocouple and compare that to one that is weak or bad.
I'm sure it will at least say when one is bad (reads infinity) if it has a broke conductor in it, but wonder what it will say about a weak thermopile/thermocouple.

Winter is almost over, I'll probably not see another floor furnace for another year. Bummer (yeah right... as if I'm excited about crawling under a house hehe)