| Most excellent ! Thanks Luana !
That metal tubing on the thermocouple actually holds a wire ... in reality, a 100% shielded coaxial cable ...
So, if the thermocouple is 30-40 mv, and a typical powerpile is 750 mv, there's gotta be more than several ! I would say at least 20 thermocouple junctions in a powerpile ... and it doesn't need to use shielded cable ... because signal is large enough to overcome electrical noise ... (or that naughty ham radio operator next door...)
So, the aquastat then is simply the switch that closes the circuit from the powerpile to open the gas valve... __________________
The following statement is true.
The previous statement is false. |