Base Metal Thermocouples

A Variety of Thermocouple Variations Available to Meet Your Application Needs

Watlow offers two basic types of base metal thermocouples with protection tubes, including bare and ceramic insulated elements. Many variations of each type are available to meet your application needs.

Features & Benefits

Insulated wire thermocouples suitable for most general purpose applications

Bare and ceramic insulated elements are available in ASTM E 230 Types K and J and can be twisted or butt welded. Choices include straight or angle types, two- or four-hole insulators and single or dual element.

Protected thermocouples are supplied complete with head, block and protection tube


Optical Res Accuracy Temperature Outside Diameter
up to 2300 up to 1260 13, 19, 21, 25, 26.7, 33.4 or 41.3 in. In 0.5, 0.75, 0.84, 1.0, 1.05, 1.315 or 1.625 mm Cm

Related Documentation

  • Brochures

    Thermal Solutions for Foodservice Equipment

  • Training and Education

    Thermocouple Temperature vs. EMF Tables

  • Catalogs

    Sensor Catalog (Section) - Resistance Temperature Sensors

    Sensor & Controller Catalog

  • Specification Sheets

    Thermocouples for General Applications

    Base Metal Thermocouple

    Connector Systems


    Mineral Insulated Thermocouple

    Miniature Thermocouple Connectors

    Noble Metal

    Sensors for High Temperature Heat Treating

    SERIES 5750

    SERIES 5900

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Quality Certificates

ISO 90012008 Certificate - Richmond

ISOIEC 17025 2005 Certificate - Sensors - 1-31-19 Richmond