Tungsten-rhenium thermocouples sune mafi girman thermocouples don auna zafin jiki. Ya fi dacewa da injin, H2 da yanayin kariyar iskar gas, kuma matsakaicin zafin jiki na aiki zai iya kaiwa 2300.℃. Akwai ƙididdiga guda biyu, C (WRe5-WRe26) da D (WRe3-WRe25), tare da daidaito na 1.0% ko 0.5%