Tungsten-rhenium thermocouples nimwe murwego rwohejuru rwo gupima ubushyuhe. Irakwiranye cyane cyane na vacuum, H2 hamwe n’ibidukikije birinda gaze, kandi ubushyuhe ntarengwa bwo gukora bushobora kugera kuri 2300℃. Hariho kalibibasi ebyiri, C (WRe5-WRe26) na D (WRe3-WRe25), hamwe na 1.0% cyangwa 0.5%