Watlow AF-2021439 Mineral Insulated Thermocouple

The Watlow AF-2021439 Mineral Insulated Thermocouple is a rugged mineral-insulated (MI) sensor designed as an AF Style Thermocouple with Metal Transition, built on the XACTPAK® metal-sheathed mineral-insulated sensor construction for fast-response temperature measurement in high-temperature industrial processes. Its design targets high-temperature industrial process applications and offers resistance to vibration, moisture, and thermal shock, with applications spanning heat-treat furnaces, industrial ovens, kilns, steam generators, refinery operations, semiconductor manufacturing systems, power generation, turbines, and other demanding thermal processing equipment. OEMs, maintenance teams, and system integrators rely on AF-2021439 for sensor replacement, equipment repairs, control retrofits, and preventive maintenance programs, and typical common replacements include Watlow AF-2001775, AF-2020587, and AFEA0TQ720U4140.