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Thermocouple with Ungrounded Junction, Type J, 1/8" Diameter, 24" Length, with Mini Male Plug
Product Overview
Thermocouples are among the most versatile and widely used devices for temperature measurement across various industrial, commercial, and scientific applications. They operate by converting thermal energy into a measurable electrical voltage, providing a reliable input signal for process controllers, data loggers, and recorders.
How Thermocouples Work
A thermocouple is constructed from two different types of metal wires joined together at one end, known as the "hot" or measuring junction. The other end, where the wires are connected to a measuring instrument, is called the "cold" or reference junction. When the hot junction is exposed to a temperature different from the reference junction, a temperature gradient is created. This gradient generates a small, predictable voltage, or Electromotive Force (EMF), due to the Seebeck effect. The magnitude of this voltage is directly proportional to the temperature difference, allowing for precise temperature measurement once calibrated.
By selecting specific metal alloys and protective sheath materials, thermocouples can be engineered to operate across an exceptionally wide temperature spectrum, from cryogenic lows of -200°C (-328°F) up to extreme highs of 2316°C (4200°F).
Our Thermocouple Offerings
Pyromation is a leading manufacturer of thermocouples, offering an extensive range of high-quality replacement parts and complete assemblies designed to meet the demands of any application. Our product line includes:
- MgO (Magnesium Oxide) Insulated Thermocouples: Ideal for high-temperature and high-vibration environments, offering excellent durability and rapid response times.
- Industrial Thermocouples: Robustly designed for heavy-duty process applications, often used with connection heads and thermowells.
- General-Purpose Thermocouples: Versatile and cost-effective solutions for a wide variety of standard temperature sensing needs.
We also specialize in creating custom thermocouple assemblies for specialized environments, including hazardous locations that require explosion-proof connection heads, and applications needing additional protection through thermowells or integrated transmitters for signal conditioning.
