I have a meter with K type thermocouple. The wire welded blob at the measuring tip is discoloured from the manufacture but apart from that there is no visible insulation at all to keep the two different alloy wires apart in the fiberglass insulated sleeve (about 1.5 Meters long) that then goes to the yellow plug that fits the meter. I dont understand how the voltage generated in the tip by the two dissilar alloys can be measured at the meter when the two alloy wires are touching probably multiple times anywhere along the length of the connecting wire. Can anyone explain this? It definitely works but I dont understand it, the two individual wires definitely have no thin insulation but I suppose separation could be hidden in the tight weave of the fiberglass covering somehow but I cant see it! If you pull the fiberglass sleeve back there is no visible separator of the wires. Anyone have an answer to this? C+
- posted
6 years ago