Thermocouple, Type J, Ung. Junction, 1/8in, 12in L, Mini Male Plug

Thermocouple, Type J, Ungrounded Junction, 1/8" Diameter, 12" Length, Mini Male Plug

Product Overview

Thermocouples are among the most versatile and widely-used devices for temperature measurement across industrial, commercial, and scientific applications. Their popularity stems from their simplicity, durability, and ability to function across an extensive range of temperatures.

How Thermocouples Work

A thermocouple operates on a principle known as the Seebeck effect. It consists of two wires made from different metals, which are joined together at one end to form a measuring junction (often called the "hot" junction). The other end connects to a device that can read the signal.

When the measuring junction is exposed to a change in temperature, a small voltage, or Electromotive Force (EMF), is generated. This voltage is directly proportional to the temperature difference between the measuring junction and the "cold" or reference junction. This EMF is then measured and converted into a precise temperature reading, serving as a critical input for process controllers, recorders, and data loggers.

Key Features and Construction

Through careful selection of thermocouple wires and protective sheathing materials, these sensors can be engineered to measure temperatures ranging from as low as -200 °C (-328 °F) to as high as 2316 °C (4200 °F).

This particular model is a Type J thermocouple, known for its reliability in the -40 to 750 °C range, making it ideal for monitoring plastics and rubber manufacturing, heat treating, and other general-purpose industrial processes. It features an ungrounded junction, where the thermocouple junction is electrically isolated from the outer protective sheath. This design helps minimize electrical interference ("noise") from surrounding equipment, ensuring a more stable and accurate signal, which is crucial in environments with high-power machinery.

Pyromation's Range of Thermocouples

Pyromation is a leading producer of high-quality thermocouples and replacement parts suitable for nearly any market application. Our product line includes:

• MgO (Magnesium Oxide) Insulated Thermocouples: These are rugged, bendable, and offer excellent resistance to vibration and high temperatures.
• Industrial Thermocouples: Designed for heavy-duty use in demanding environments, often paired with connection heads and thermowells.
• General-Purpose Thermocouples: Versatile and cost-effective solutions for a broad range of applications.

We also specialize in creating complete thermocouple assemblies for hazardous locations and specialized processes that require components like terminal connection heads, protective tubes, thermowells, and integrated transmitters for signal conditioning.