Type J Thermocouple, 1/8in OD, 24in Probe, 36in Teflon Leads

Type J Thermocouple with 1/8" OD, 24" Probe, and 36" Teflon Leads

Product Overview

This Type J thermocouple is a versatile and reliable temperature sensor designed for a wide range of industrial and commercial applications. Featuring a robust 1/8" outside diameter (OD) probe and a 24-inch length, it offers precise temperature measurement. The thermocouple is equipped with 36-inch Teflon-insulated leads for enhanced durability and protection against moisture, chemicals, and abrasion.

What is a Thermocouple?

A thermocouple is one of the most common and versatile devices for measuring temperature. It operates on a simple principle: when two different types of metal wires are joined at one end (the "hot" junction) and subjected to a temperature change, they generate a small, predictable voltage, also known as an Electromotive Force (EMF). This voltage is measured at the opposite end (the "reference" junction) and converted into a precise temperature reading. This signal can then be used as an input for process controllers, recorders, and data loggers.

Thermocouples are favored for their:

• Wide Temperature Range: Depending on the metals used, thermocouples can measure temperatures from cryogenic levels (-200 °C) up to over 2300 °C.
• Durability: Their simple, rugged construction makes them resistant to shock and vibration.
• Fast Response Time: The small sensing junction allows for quick detection of temperature changes.
• Cost-Effectiveness: They provide an affordable solution for temperature measurement.

Focus on Type J

The Type J thermocouple is a popular general-purpose choice, made from a combination of Iron (+) and Constantan (-) wires. It is known for its high sensitivity and cost-effectiveness.

• Probe Temperature Range: 0 °C to 760 °C (32 °F to 1400 °F)
• Wire Color Code: Standard ANSI color coding is a white positive lead and a red negative lead, enclosed in a brown outer jacket.
• Atmosphere: Best suited for use in vacuum, inert, or reducing atmospheres. Use in oxidizing atmospheres above 540°C (1000°F) can shorten its lifespan due to iron oxidation.

Product Specifications:

• Type: J Thermocouple
• Junction: Ungrounded (Ung.) Junction for better protection from electrical noise.
• Probe Diameter (OD): 1/8"
• Probe Length: 24 inches
• Transition: Standard Transition with Spring Strain Relief
• Leadwire Length: 36 inches
• Leadwire Insulation: Teflon (PTFE)
• Maximum Ambient Temperature for Wire: 204 °C (400 °F) Continuous
• Lead Ends: 2" Split and Stripped Ends for easy connection

About Pyromation

Pyromation is a leading manufacturer of temperature sensors. We produce a wide range of thermocouples, including MgO (Magnesium Oxide), industrial, and general-purpose types, to meet the demands of nearly any application. We also specialize in custom assemblies for hazardous locations and other challenging environments that require connection heads, protection tubes, thermowells, and integrated transmitters.