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Industrial Heaters, Temperature Sensors & Process Control Solutions
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Watlow - Industrial Heaters, Temperature Sensors & Process Control Solutions
Watlow - Industrial Heaters, Temperature Sensors & Process Control Solutions
Watlow was founded in 1922 by Louis Desloge Sr. in St. Louis, Missouri, initially manufacturing electric heating elements for the shoe industry. The company’s name, “Watlow,” refers to “low-watt” heaters designed to replace steam heat. Watlow solutions are utilized across various industries, including semiconductor processing, energy generation, diesel emissions control, medical equipment, and foodservice applications, where precise thermal management is critical to operational efficiency and product quality
Over the years, Watlow has expanded its product offerings to include industrial electric heaters, temperature sensors, power and process controllers, and integrated thermal systems. Among its diverse portfolio, Watlow is especially known for its high-performance Process Controllers, Temperature Controllers, and Heaters, which are critical for maintaining efficiency, reliability, and product quality in demanding industrial environments.
We supply genuine Watlow’s advanced Sensors & Process Control instruments with fully managed, door-to-door shipping that includes customs duties and taxes for a seamless, hassle-free experience. With registered companies in both the UK and Ireland, we efficiently handle EU-compliant logistics while supporting global deliveries to key markets such as Turkey, Saudi Arabia, Oman, Nigeria, Indonesia, Malaysia, Vietnam, Mexico, Brazil, Argentina, and Colombia. Our transparent pricing and reliable international shipping ensure timely delivery of high-quality Watlow instruments designed to enhance industrial asset protection and improve operational efficiency across diverse industries.
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At qinstrument, we are committed to offering the best price guaranteed on all our Test & Measurement Equipments.

At qinstrument, we are committed to offering worldwide shipping to meet your needs wherever you are.
Watlow Instruments Applications
Watlow’s thermal solutions are essential across a wide range of industries where precise temperature control is critical to product quality, efficiency, and safety. Their heaters, sensors, and controllers are designed to perform in demanding environments, making them ideal for applications in the semiconductor, aerospace, medical, energy, food processing, and plastics industries. Whether it’s maintaining stable temperatures in complex manufacturing systems or ensuring reliable heat delivery in mission-critical processes, Watlow products help optimize performance and ensure consistent, high-quality results.
Overview
In the energy and power generation industry, precise thermal management is essential for ensuring operational efficiency, system reliability, and regulatory compliance. Watlow’s advanced thermal solutions—including heaters, temperature sensors, and controllers—are designed to perform in the demanding conditions of traditional and renewable energy systems. Their products support efficient energy transfer, maintain critical process temperatures, and improve system safety in a variety of applications, from fossil fuel to nuclear and solar power generation.
Key Applications:
Fluid and Gas Heating: Delivering consistent and controlled heating for liquids and gases in power plants, ensuring efficient system performance and reduced emissions.
Temperature Control in Turbines and Boilers: Monitoring and regulating temperature to optimize performance, prevent overheating, and extend equipment lifespan.
Renewable Energy Systems: Supporting thermal management in solar thermal and hydrogen systems to enhance energy efficiency and stability.
Overview
In the aerospace and defense industry, precise thermal management is vital for the performance, safety, and reliability of mission-critical systems. Watlow’s advanced thermal solutions—including heaters, sensors, and controllers—are engineered to withstand extreme conditions and deliver consistent performance in aerospace and defense applications. Their products ensure reliable operation in high-altitude, high-vibration, and rapidly changing environments, supporting both commercial and military systems.
Key Applications:
De-icing and Anti-icing Systems: Providing controlled heat to critical aircraft surfaces and components to prevent ice buildup during flight.
Environmental Testing Chambers: Maintaining precise temperature conditions for testing aerospace components under simulated environmental extremes.
Avionics and Electronics Cooling: Regulating temperatures in sensitive electronic systems to ensure consistent operation and prevent overheating.
Overview
In the plastic processing industry, precise temperature control is critical for maintaining material consistency, product quality, and production efficiency. Watlow’s thermal solutions provide advanced heating and control technologies that optimize key processes such as extrusion, injection molding, and thermoforming. By delivering reliable and uniform heat, Watlow systems help reduce cycle times, minimize waste, and ensure consistent part quality across a wide range of plastic applications.
Key Applications:
Injection Molding: Providing uniform heating in molds and hot runner systems to ensure dimensional accuracy and surface finish.
Extrusion Processes: Controlling barrel and die temperatures for consistent material flow and product integrity.
Thermoforming: Delivering rapid, even heating to plastic sheets for precise shaping and reduced cycle times.
Overview
In the industrial automation industry, precise thermal control is vital for maintaining efficiency, product consistency, and process safety. Watlow’s advanced heating solutions, sensors, and controllers are engineered to deliver reliable and accurate temperature management in automated systems. Their integrated thermal solutions enhance performance, reduce downtime, and support the high-speed, high-precision demands of modern manufacturing environments.
Key Applications:
Process Heating Control: Managing temperature in automated production lines, such as plastics processing, packaging, and material handling systems.
Equipment Temperature Regulation: Ensuring stable and controlled heating in machinery and automated tools to maintain consistent performance.
Integrated Thermal Systems: Providing custom heating and control assemblies that streamline system design and improve energy efficiency in automated operations.
Overview
In the medical equipment industry, precise thermal management is vital for ensuring device reliability, patient safety, and compliance with stringent healthcare regulations. Watlow’s advanced thermal solutions provide consistent and accurate temperature control for a variety of medical applications, supporting performance and durability in life-saving technologies.
Key Applications:
Sterilization Systems: Providing uniform and reliable heating for autoclaves and sterilizers to ensure effective disinfection of medical instruments.
Diagnostic Equipment: Controlling temperatures in blood analyzers, DNA sequencers, and other diagnostic devices for accurate test results.
Patient Warming Devices: Delivering safe, controlled heat in patient warming systems to maintain body temperature during surgery or recovery.

At qinstrument, we are committed to offering the Genuine Test & Measurement Equipments.
Watlow Available Product Part Numbers with Categories
Heaters
| Watlow WATROD Tubular Heater |
| Watlow Screw Plug Immersion Heater |
| Watlow Flange Immersion Heater |
| Watlow Circulation Heater |
| Watlow Square Flange Immersion Heater |
| Watlow WATROD Duct Heater |
| Watlow FIREBAR Heater |
| Watlow STARFLOW Circulation Heater |
| Watlow WATROD Multicoil Tubular Heater |
| Watlow Finbar Heater |
Power Controllers
| Watlow EZ-ZONE PM Controller |
| Watlow F4T Process Controller |
| Watlow EZ-ZONE PM Express Controller |
| Watlow EZ-ZONE RM Control Module (RMC) Multi-Function Controller |
| Watlow EZ-ZONE ST Temperature Controller |
| Watlow F4S Ramping Temperature Controller |
| Watlow F4D Ramping Temperature Controller |
| Watlow EZ-ZONE RM Access Module Multi-Function (RMA) Controllers |
| Watlow F4P Temperature Controller |
| Watlow EZ-ZONE RM Limit Module (RML) Multi-Function Controllers |
| Watlow EZ-ZONE RM High-Density Control Module (RMH) Controllers |
| Watlow EZ-ZONE RM Expansion Module (RME) Multi-Function Controllers |
| Watlow EZ-ZONE RM Scanner Module (RMS) Multi-Function Controller |
| Watlow EZ-ZONE RMA PLUS Remote Access Module |
| Watlow Series CLS200 Loop Controller |
Thermocouples
| Watlow Rigid Sheath Thermocouple |
| Watlow Insulated Wire Thermocouple |
| Watlow AR Style Mineral Insulated Thermocouple with Connection Head |
| Watlow Pipe Clamp Thermocouple |
| Watlow Ring Terminal Thermocouple |
| Watlow AC Style Mineral Insulated Standard Plug Thermocouple |
| Watlow AF Style Mineral Insulated Thermocouple with Metal Transitions |
| Watlow AC Style Mineral Insulated Mini Plug Thermocouple |
| Watlow Rigid Sheath Thermocouple with Threaded Fitting |
| Watlow Flange Style Thermocouple |
| Watlow AR Style Mineral Insulated Dual Element Thermocouple w/ Connection Head |
| Watlow Adjustable Spring Thermocouple |
| Watlow AF Style Mineral Insulated Dual Element Thermocouple |
| Watlow Flexible Thermocouple Extensions |
| Watlow Rigid Sheath Fixed Bayonet Thermocouple |
| Watlow Nozzle Style Thermocouple |
| Watlow AB Style Mineral Insulated Cut and Stripped Thermocouple |
| Watlow AB Style Mineral Insulated Cut and Stripped Dual Element Thermocouple |
| Watlow PFA Encapsulated Thermocouple |
| Watlow Large Diameter Rigid Sheath Fixed Thermocouple |
| Watlow Stainless Steel Shim Style Thermocouple |
| Watlow AQ Style Mineral Insulated Miniature Transitions Thermocouple |
| Watlow Brass Shim Style Thermocouple |
| Watlow AT Style Mineral Insulated Thermocouple For Use with Thermowells |
| Watlow Grommet Style Thermocouple |
| Watlow AT Style Mineral Insulated Dual Element Thermocouple |
| Watlow Adjustable Armor Thermocouple |
Process Controllers
| Watlow EZ-ZONE PM Controller |
| Watlow F4T Process Controller |
| Watlow EZ-ZONE PM Express Controller |
| Watlow EZ-ZONE RM Control Module (RMC) Multi-Function Controller |
| Watlow EZ-ZONE ST Temperature Controller |
| Watlow F4S Ramping Temperature Controller |
| Watlow F4D Ramping Temperature Controller |
| Watlow EZ-ZONE RM Access Module Multi-Function (RMA) Controllers |
| Watlow F4P Temperature Controller |
| Watlow EZ-ZONE RM Limit Module (RML) Multi-Function Controllers |
| Watlow EZ-ZONE RM High-Density Control Module (RMH) Controllers |
| Watlow EZ-ZONE RM Expansion Module (RME) Multi-Function Controllers |
| Watlow EZ-ZONE RM Scanner Module (RMS) Multi-Function Controller |
| Watlow EZ-ZONE RMA PLUS Remote Access Module |
| Watlow Series CLS200 Loop Controller |
Process Heaters
| Watlow WATROD Tubular Heater |
| Watlow Screw Plug Immersion Heater |
| Watlow Flange Immersion Heater |
| Watlow Circulation Heater |
| Watlow Square Flange Immersion Heater |
| Watlow WATROD Duct Heater |
| Watlow FIREBAR Heater |
| Watlow STARFLOW Circulation Heater |
| Watlow WATROD Multicoil Tubular Heater |
| Watlow Finbar Heater |
RTD Sensors
| Watlow RB Style RTD |
| Watlow RR Style RTD |
| Watlow RF Style RTD |
| Watlow Specialty RTDs |
| Watlow RT Style RTD |
| Watlow RC Style RTD |
Temperature Controllers
| Watlow PM PLUS PID & Integrated Limit Controller |
| Watlow EZ-ZONE PM Controller |
| Watlow F4T Process Controller |
| Watlow EZ-ZONE PM Express Controller |
| Watlow PM Legacy Temperature & Process Controller |
| Watlow LV Series Limit Controller |
| Watlow EZ-ZONE RM Control Module (RMC) Multi-Function Controller |
| Watlow Series CV Temperature Controller |
| Watlow EZ-ZONE ST Temperature Controller |
| Watlow F4S Ramping Temperature Controller |
| Watlow F4D Ramping Temperature Controller |
| Watlow WATCONNECT Temperature Control Panel |
| Watlow EZ-ZONE RM Access Module Multi-Function (RMA) Controllers |
| Watlow F4P Temperature Controller |
| Watlow EZ-ZONE RM Limit Module (RML) Multi-Function Controllers |
| Watlow EZ-ZONE RM High-Density Control Module (RMH) Controllers |
| Watlow EZ-ZONE RM Expansion Module (RME) Multi-Function Controllers |
| Watlow EZ-ZONE RM Scanner Module (RMS) Multi-Function Controller |
| Watlow EZ-ZONE RMA PLUS Remote Access Module |
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Why Choose Qinstrument?
Best Prices Guaranteed: We offer the best prices online for a wide range of Watlow Industrial Heaters, Temperature Sensors & Process Control Solutions ensuring you get top-quality products at unbeatable value.
Efficient Lead Times: While some Watlow instruments may have specific lead times, we strive to reduce them as much as possible. Our dedicated team ensures transparent communication regarding product availability and delivery schedules, keeping you well-informed at every step so you can plan your operations with confidence and avoid any unexpected delays.
Worldwide Shipping: Whether you’re located in the UK, Ireland (EU) or internationally, our extensive shipping network guarantees fast and reliable delivery of Watlow Instruments. We offer door-to-door service, covering all duties and taxes, so your equipment arrives hassle-free, no matter where you are. With a focus on efficient logistics, we ensure timely shipments to meet your operational needs.






















