Borrmann Brenner Thermocouple with copper tube feed line

For infrared heaters.
The thermocouple consists of two electrical conductors connected at the tip.
The inner conductor is made of constantan and is -3.25 mV/100 °C in the thermoelectric voltage series. The outer conductor is made of chromium-nickel and is at +2.25 mV/100 °C.
The potential difference (U/100 °C) is thus 5.5 mV/100 °C.
The
two conductors are insulated from each other.
When properly heated, a voltage of approx. 30 - 35 mV is generated.
When the thermostat circuit is closed via the magnet insert inside the thermoelectric flame monitor, a current of approx. 0.8 - 1.2 A flows.