Inertia heat flux sensors - IHF Series

IHF sensors are designed for measuring high heat fluxes. They operate based on a physical principle known as "inertial" or "capacitive" measurement. In practice, they consist of a calorimetric sensing element (oxygen-free pure copper) with precisely known thermal properties (calculated as a function of temperature). Their highly robust design offers market-leading durability, even in the harshest applications—whether involving flames, soot, acids, high pressure, or a vacuum. IHF heat flux sensors are available in radiative, convective, and total flux versions.

​IHF sensors can measure heat fluxes of up to 20 MW/m² for a limited duration. They are built around a sensing core whose temperature rises to a limit (approximately 900°C) when exposed to heat flux. The heat flux is derived from this temperature rise through mathematical post-processing based on the calorimetric principle.

​When the sensing element is unprotected, the IHF sensor can measure either convective or total flux, depending on the finish of the sensing surface (pure gold thin film or matte black). When equipped with a window on the front face, the IHF sensor provides an accurate measurement of radiative flux.

IHF Series sensors are available with two standard mechanical interfaces (screw-in or flange mounting) as well as in a wide variety of custom designs.