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Type J Thermocouple: Robust and Reliable Temperature Sensing
Product Specifications:
- Model: Type J Thermocouple
- Probe Diameter (OD): 1/8 inch
- Probe Length: 12 inches
- Process Connection: 1/2" NPT Stainless Steel Hex Nipple
- Conduit Opening: 3/4" NPT
- Temperature Range: 0°C to 760°C (32°F to 1400°F)
What is a Thermocouple?
Thermocouples are the most common, versatile, and convenient devices used for temperature measurement across a vast range of industrial, commercial, and scientific applications. They function by converting heat energy into a usable electrical signal (voltage) that can be read by process controllers, recorders, and other monitoring equipment.
A thermocouple is created by joining two different types of metal wires at one end, forming a "hot junction." When this junction is heated, a temperature gradient is created along the wires, which generates a small, predictable voltage known as the Electromotive Force (EMF). This EMF is measured at the opposite "cold" or reference end of the wires and is directly proportional to the temperature at the hot junction.
By selecting specific metal alloys and protective sheath materials, thermocouples can be engineered to measure an extremely broad spectrum of temperatures, from cryogenic levels (-200°C / -328°F) to extreme heat (2316°C / 4200°F).
Why Choose a Type J Thermocouple?
The Type J thermocouple, made from an Iron (+) and Constantan (-) junction, is one of the most widely used types due to its reliability, wide temperature range, and cost-effectiveness. It is particularly well-suited for applications in the plastics and rubber manufacturing industries, heat treating and annealing, and general industrial processes within its specified range.
Built for Industrial Environments
Pyromation is a leader in producing high-quality thermocouples for nearly any market application. This model features a durable construction with a 316 Stainless Steel (SS) process connection, ensuring excellent corrosion resistance. We specialize in creating assemblies for various environments, including hazardous locations, and can provide customized solutions with connection heads, protective thermowells, and transmitters to meet your specific needs.
