The global impact of COVID-19 on our people and the global economy is significant, and Watlow has taken a comprehensive approach to deal with the current crisis. Our contingency planning includes protecting our team members, communicating often with our customers and partners and maintaining the continuity of supply lines.

At the beginning of the pandemic, we set two priorities that guide our responses and decisions: the health and safety of our team members while continuing to supply essential products needed by our customers.

If you have questions about how the pandemic is impacting Watlow or Watlow’s response, please contact your Watlow representative.


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Interactive Product Catalogs

Browse the range of our broad product offering in an easy-to-use, mobile-friendly, interactive catalog


Watlow manufactures sensor products to fit customer application needs. A wide variety of temperature sensors including thermocouples, resistance temperature detectors (RTDs) and thermistors, as well as wire, mineral insulated cable, connectors and hardware are designed and supplied by Watlow and manufactured at our fully integrated facility.

RTD's, Thermocouples & Thermistors

Watlow offers a broad selection of temperature sensing solutions with thousands of standard configuration options available in 5 days or less. Custom solutions are available in large quantities.


Watlow manufactures the industry’s most complete line of temperature controllers and process control products.


Watlow manufacturers a broad line of thermocouples including mineral insulated metal sheathed, base metal, high temperature, surface temperature and multipoint in thermocouple types J, K, R, S, T, B and E.


Since 1914, Watlow’s SERV-RITE thermocouple wire and thermocouple extension wire have been known for premium performance and reliability. Custom and stock wires available.

Lab Services

Watlow's lab services provide prototype testing and quality certification for the development of the optimum sensor for your application. Our certification processes can verify your finished product is built to specifications set forth by the world's leading standards agencies. Product Development and Prototype Test Lab Watlow can provide testing during all phases of product development. To guarantee Watlow temperature sensors retain their quality after long-term use, we maintain a variety of custom designed furnaces and baths for long-term drift and cycle testing at temperatures up to 3090°F (1700°C). Prototype testing evaluates new sheath materials, new configurations and new manufacturing processes. Watlow is always stretching the limits and always searching for the better way to handle unique applications. We offer the following tests: Time response Vibration High temperature Cryogenic temperature Tensile and compression Humidity Life testing Cycle and drift Wire insulation abrasion Micro-hardness Dielectric breakdown Customized testing for your application ISO 10012 is used as the guide for all sensor and instrument calibration making all results traceable to the National Institute of Standards and Technology (NIST). The standard methods and specifications for sensor calibration used are: ASTM E 207 ASTM E 220 ASTM E 230 ASTM E 644 AMS 2750 Watlow can test and certify any temperature sensing product.

Resistance Temperature Detectors (RTDs)

Watlow provides resistance temperature sensors including RTDs and thermistors for electric heating applications. View our selection of temperature sensors and more.

Temperature Sensors

A wide variety of temperature sensors including thermocouples, resistance temperature detectors (RTDs) and thermistors as well as wire, mineral insulated cable, connectors and hardware are supplied by and manufactured at Watlow’s fully integrated facility.

Sensor Accessories

Sensor accessories from Watlow include fittings, thermowells, protection tubes, connectors, connection heads & blocks and transmitters.

Radio Frequency Thermocouple

Watlow's TR thermocouple probe is designed for use in plasma generation applications. It ensures accurate temperature readings through radio or conduction environments where traditional sensors are ineffective. Radio frequency energy can cause serious temperature measurement errors when exposed to these types of environments.

MICROCOIL™ Thermocouples

Based on patented technology, critical isothermal surface temperature measurement Watlow's MICROCOIL™ thermocouple provides highly accurate measurements.