Type J Thermocouple

　　J Type Thermocouples are 1 of the 3 Most commonly used thermocouple configurations for industrial and scientific temperature measurement. The matching of the Type J - Iron and Constantan thermocouple alloys provide excellent accuracy in the temperature range of 212°F to 932°F (100 to 500°C) and making it ideal for most plastics processing, composites, electronics and chemical product development or production.

　　Recommended Temperature range is 32°F to 1400°F (0 to 750°C)

　　Type J thermocouple alloys have the capability to measure from -346 to 2,192°F (-210 to 1200°C). The challenge with this expanded range is linearity (accuracy) sensitivity and the life span-repeatability are very negatively impacted.

　　J Type thermocouples can have Excellent Linearity (stability) in the temperature range of 212°F to 932°F (100 to 500°C) with a deviation of approx. 1.5°F (0.5°C).

　　Type J also has the second highest level of sensitivity with a 50 to 60 millivolt output per degree C.

　　The Filter Search tool on the Left or the Clickable product categories below will aid in your selection of the Type J thermocouple products

　　Type J Thermocouple Probes with a bendable metal stainless steel, Inconel or PFA protected metal sheath for immersion in liquids, gases, air and other industrial applications.

　　J Type Beaded Thermocouples designs with fine diameter PFA and Fiberglass insulated lead wire with high flexibility and very fast response time.

　　J Type Surface Thermocouples with stick on, and bolt-down versions along with handheld configurations for process equipment monitoring and control

　　Type J Thermocouple Connectors include miniature, standard size, panel mounted, circuit board and other configurations available in thermoplastics, thermosets and ceramics.

　　Type J Thermocouple Wire with diameter and insulations from fine diameter 36 gage (.005") to rugged 20 Gage (.032") with Plastic Fluoropolymers to higher temperature Fiberglass and or with Metal Overbraiding.

　　J Type thermocouple materials consists of specialty matched Iron (Positive) and nickel copper alloy Constantan (Negative). It should be noted the positive Iron leg is susceptible to oxidation and considerations must be taken especially at higher temperature or utilization of an exposed junction.

　　Color Codes - ANSI, IEC and JIS

　　ANSI (American National Standard Institute) White positive, Red negative with Black or Black trace overall with wire and connectors.

　　IEC ( International Electrotechnical Commission) Black positive, White negative and Black overall on wire and connectors

　　JIS (Japanese Industrial Standard) Red positive, White negative, with Yellow or Yellow trace on wire and connectors

　　Industry applications include the overall plastics processing industry including medical products, heat treating of aluminum, curing composites, manufacturing and developing chemicals, paints and other coatings, electronic and materials testing, along overall research.