Watlow

Watlow

Watlow is an American manufacturer of industrial thermal systems, founded in 1922 and headquartered in Winona, Minnesota. The company designs and produces process controllers, electric heaters, temperature sensors, and complete thermal system assemblies used across a broad range of industrial applications. Watlow is recognized for integrating sensing, control, and power components into cohesive thermal management solutions, helping manufacturers achieve precise temperature control in critical processes.

Watlow's process controllers, including PID and ramp/soak controllers, are used to govern heating and cooling cycles in industrial ovens, furnaces, reactors, and test chambers. Their F4 series dual-channel ramping controllers exemplify the company's focus on combining flexible programming with reliable performance for applications that require precise, repeatable thermal profiles.

Key Product Lines

• Process Controllers — PID, ramp/soak, and multi-loop controllers for industrial temperature and process management
• Electric Heaters — cartridge, band, immersion, and flexible heaters for industrial equipment
• Temperature Sensors — thermocouples, RTDs, and resistance sensors for accurate process measurement
• Thermal Systems — integrated assemblies combining heaters, sensors, and controllers for OEM applications

Industries Served

Watlow thermal solutions serve the semiconductor manufacturing, food and beverage processing, medical device production, pharmaceutical, aerospace & defense, plastics processing, and general industrial manufacturing sectors. Their process controllers are widely used in R&D test chambers, industrial ovens, and automated production lines where stable thermal performance is critical.