WIKA TC84 high-temperature thermocouple

The TC84 high-temperature thermocouple from WIKA features high safety and a long service life. It is available in ATEX and and IECEx certified versions.

Typical applications for the TC84 are gasification reactors with process temperatures up to 1700°C and pressure loads up to 65 bar for sulfur recovery units. The precious metal thermocouple is shielded from damaging process influences through two protection tubes — through a ceramic external tube and an internal tube made from monocrystalline sapphire glass, which effectively delays the poisoning of the thermocouple. In the event of any failure, the dual sealing system of the safety chamber prevents the escape of toxic media.

The construction of the thermocouple also follows economical principles. A TC84, damaged following extreme loading, can be repaired through the exchange of the wetted parts; another purchase is therefore not required. The sapphire protection tube also eliminates the need for purging with inert gas to protect the thermocouple.