Watlow AF-2021439 Mineral Insulated (MI) Thermocouple

Description:

The Watlow AF-2021439 MI Thermocouple is used in industrial temperature measurement and process control systems requiring durable, fast-response temperature sensing in high-temperature environments. Commonly installed in heat-treat furnaces, industrial ovens, semiconductor manufacturing equipment, power generation systems, turbines, and process heating machinery where reliable temperature monitoring is critical. Maintenance teams, OEMs, and system integrators use this thermocouple for sensor replacement, equipment repairs, control system retrofits, and preventive maintenance programs.

Applications:

This mineral-insulated thermocouple is designed for industrial temperature monitoring in heat treating, furnaces, kilns, steam generators, food processing equipment, refinery operations, semiconductor manufacturing systems, and other demanding thermal processing applications. Its metal-sheathed construction provides durability, fast response time, and resistance to vibration, moisture, pressure, and harsh operating conditions.

Technical Specifications:

• Manufacturer: Watlow
• Part Number: AF-2021439
• Product Type: Mineral Insulated (MI) Thermocouple
• Series: AF Style Thermocouple with Metal Transition
• Construction: XACTPAK® Metal-Sheathed Mineral Insulated Sensor
• Temperature Sensor Type: Thermocouple
• Designed for high-temperature industrial process applications
• Fast-response mineral insulated construction
• Resistant to vibration, moisture, and thermal shock
• Suitable for furnaces, ovens, turbines, and process heating equipment

Common Replacements:

• Watlow AF-2001775
• Watlow AF-2020587
• Watlow AFEA0TQ720U4140