Share this page on

Thermocouple Wire Manufacturers and Companies

IQS Directory provides useful search tools to find leading thermocouple wire manufacturers and suppliers. Utilize our website to review and source thermocouple wire manufactures with our easy-to-use features which allow you to locate thermocouple wire companies that will design, engineer, and manufacture thermocouple wires for your exact specifications. Our request for quote forms make it easy to connect with leading thermocouple wire manufacturers. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right manufacturers whether you are looking for K type thermocouple wires, type B thermocouple wire, or type N thermocouple wire.

Related Categories

Featured Company

Thermo Sensors Corporation - Temperature Probes

In business since 1972, Thermo Sensors Corporation is a leading thermocouple manufacturer of thermocouple assemblies, thermowells, temperature sensors, type K thermocouples, & resistance temperature detectors. We provide the chemical, refining, food, pharmaceutical & other industries with sensors of standard & special designs. Contact us for more information about our temperature probe products. | Email This Company | Phone: 800-889-5478

P.O. Box 461947    Garland, TX 75046

Thermal Devices - Temperature Probes

Thermal Devices is your source distributor for stock or made-to-order industrial temperature sensors, thermocouples and resistance temperature detectors, plus speedy delivery. Our line includes varieties of thermocouples and RTDs (melt bolt, ultra-high temp, armor & spring style variable depth, surface mount, etc.), thermowells, thermocouple wire, thermocouple & thermowell assemblies, and temperature probes. | Email This Company | Phone: 800-282-9100

1702 Back Acre Circle    Mt. Airy, Maryland 21771

Temperature Specialists, Inc. - Temperature Probes

Temperature Specialists is a manufacturer of resistance temperature detectors, RTDs, temperature sensors, thermocouples, thermocouple assemblies & probes. We provide solutions for your temperature sensing needs by building to meet your specifications. Feel free to visit our website for full descriptions of platinum resistance detectors, hollow elements, industrial assemblies and more. Call today! | Email This Company | Phone: 800-272-5709

3175 Bridge St. NW    St. Francis, MN 55070

Featured Company

Industry Information

Thermocouple Wire

Thermocouple wire is a main component in thermocouple design. All thermocouples are composed of two thin wires, each made of a different metal alloy, that are joined at one end, which is exposed to the fluid or gas whose temperature is measured. They connect the point of sensing to the point of cold junction compensation, or the end where the measurement takes place.

Thermocouples measure temperature by sending an electrical current down each wire when the opposite parts, the CJC end and sensing end are at different temperatures. The voltage from the current flow is measured to determine the exact temperature difference between the two sensing points. The wires are integral parts of the thermocouple assembly, along with tubes, insulators and sheaths that provide protection. They are often joined to electronic readouts to provide temperature monitoring and quick measurement. There are two main grades of thermocouple wire—thermocouple and extension grades. Thermocouple grade wire is actually used to make the sensing point, while the extension grade wires extend the signal from a probe back to the reading instrument. Thermocouple wires are used in every type of thermocouple instrument, including E, J, N, T, B, S, R, W and C, all of which use different metal alloys for their wires.

Like all wire, thermocouple wire is fabricated by extruding metal preforms. The extrusion process involves forcing heated and malleable metal through successively smaller dies until the desired diameter and profile is achieved. Each type of thermocouple requires a different metal or alloy for each thermocouple wire. For example, type K thermocouples, which are the most popular and widely used kind, are made of two different alloys—one wire is a chromium nickel alloy, while the other is an aluminum nickel alloy. Every thermocouple requires wires of dissimilar metals because the sensing ends are joined together and are not able to measure or detect a temperature difference if they are the same metal material. Some thermocouples, which are able to pick up sensitive differences and must be accurate, use SLE (special limits of error) wire, which has a slightly better accuracy than standard thermocouple wire. In order to tell the different types of wire apart, the ANSI developed color coding to distinguish the two wires. Red signals negative lead in the insulated thermocouple wire, brown represents the center jacket of the wire, and white coated wires are usually used in high temperature thermocouples. Their maximum length is usually under 100 feet, that is, if they have 20 AWG or thicker wire.

Thermocouple Wire
Thermocouple Wire
Thermocouple Wire - Thermo Sensors Corporation
Thermocouple Wire - Thermo Sensors Corporation

Move to Top