Sapphire-design thermocouple WIKA Model TC83

Applications

• Sulphur recovery units (SRU)

• Waste-to-Energy plants (WtE)

• Processes with high hydrogen sulphide content

• Hydrogen-based DRI plants (“direct reduced iron”) in the steel industry

Special features

• Cost saving by non-purge system

• Reduction of unplanned downtimes

• Increased safety against escape of toxic media through double sealing system

• High variance of thermowell / protection tube materials

• High process safety with processes up to 1,700 °C [3,092 °F]

Description

This high-temperature thermocouple with a gas-tight sapphire protection tube has been specifically developed for use in hydrogenous atmosphere.
Through the monocrystalline structure, the sapphire protects the noble metal of the thermocouple from poisonous toxic media in the aggressive process atmosphere.

Hermetically sealed junctions prevent toxic gases from being able to escape the reactor.
The high temperatures in the process place very high demands on protection tubes and thermocouples.
These process conditions often lead to shutdowns and interruptions in operation.

Utilising the sapphire design can significantly improve life expectancy of the thermocouple and reduce downtime.