High Temperature Thermometers

High Temperature Thermometers

High temperature thermometers address services where process temperatures can approach the upper limits of conventional sensing assemblies. In steel treatment, glass smelting, flue gas duties, and brick/ceramics processes, temperatures can reach extremely high levels, requiring specialized thermometer designs. These measuring points typically rely on thermowells/protection tubes made from ceramic or high-performance alloys, paired with appropriate thermocouple constructions.

Sensor protection is central to the design. Protection tubes shield the sensing element from mechanical stress, chemical attack, and rapid temperature shocks, extending sensor life and stabilizing long-term measurement. Modular architectures support application-specific configuration, including optional temperature transmitters (integrated or remote), multiple thermocouple types (including base and noble metal options), and common process connections such as threaded, compression, and flanged interfaces.

Benefits are realized through reduced maintenance frequency and improved measurement stability in harsh conditions. Wear- and chemically resistant protection-tube materials support longer service life, while non‑porous protective materials help maintain stable measurements over time. These improvements can translate into lower lifecycle cost at the measuring point, improved product quality consistency, and increased overall operational safety in high-energy processes.

Selection typically balances response, survivability, and installation constraints. The thermocouple type and protection tube material are chosen to match peak temperature, atmosphere, corrosion mechanisms, and mechanical loading. Modular construction enables tailored insertion lengths and mounting styles, supporting both standardized builds and customized solutions where furnace geometry, radiant heat exposure, or vibration drive unique requirements.

Typical applications include energy production (e.g., biomass and coal), chemical processes such as gasifiers, industrial furnaces including waste incineration, and high-temperature operations in glass, steel/iron production, and cement/building materials. Across these duties, the measurement objective is resilient, repeatable temperature data under conditions that would rapidly degrade general-purpose assemblies.

George E. Booth Co., an exclusive authorized representative of sales and service for Endress+Hauser.