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J-Type Thermocouple

The J-type thermocouple uses Seebeck effect to measure temperature. It consists of a loop of iron wire and Constantine alloy wire. Place one end (hot end) where it is being measured and the other end (cold end) where the temperature is known. When there is a temperature difference between the two ends, due to the different characteristics of the two metals, electrons run from the hot end to the cold end to produce a voltage. In a certain temperature range, the voltage and the temperature difference are roughly proportional, and the voltage control relationship table can be measured to know the temperature to be measured.

Temperature Range:

Theoretical cover temperature zone: generally can reach -200 ℃ to 1200℃.

Actual common range: in most cases, 0℃ to 750℃. There are also data showing that -40 ℃ to 750℃.

Special cases: data show that it can work in the range of -210 ° C to 1000 ° C or -210 ° C to 1200 ° C.Accuracy (whichever is greater):

Application :

1. Iron and steel metallurgy industry: used for blast furnace, steelmaking furnace temperature monitoring and continuous casting billet temperature monitoring.

2. Petrochemical industry: It can monitor and control the temperature of reactor and heating furnace, and is also used for pipeline temperature monitoring.

3. Power industry: can monitor the temperature of key parts of boilers, turbines, generators and other equipment.

4. Glass and ceramic industry: temperature control and monitoring of glass furnaces and ceramic kilns can be achieved.

5. Heat treatment industry: temperature control and monitoring during metal quenching, tempering and surface treatment.

Parameter detail

Product Parameter

Model	Graduation mark	Temperature range	Mounting& Fixing
WRN	K	0-1000°C	1.without Fixing Device 2.Threaded Connector 3.Movable Flange 4.Fixed Flange 5.Elbow Tube Connection 6.Threaded Cone Connection 7.Straight Tube Connection 8.Fixed Threaded Tube Connection 9.Movable Threaded Tube Connection
WRE	E	0-700°C
WRF	J	0-600°C
WRC	T	0-400°C
WRP	S	0-1600°C
WRQ	R	0-1600°C
WRR	B	0-1800°C
WRM	N	0-1100°C

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About sinton

Jiangsu Sinton Group Co.,Ltd.

Founded in 2001, Sinton Group is a one-stop supplier specializing in industrial heating solutions, headquartered in Yancheng, Jiangsu Province, China (approximately 2 hours by high-speed rail or 1 hour by flight from Shanghai).
Operating through an integrated group structure, Sinton centers on Sinton Electric Co., Ltd. (formerly Yancheng Xingtai Electric Equipement Co.,Ltd.), and works in close coordination with Sinton Technology Limited, Jiangsu Sinton Thermal Co., Ltd., Jiangsu Sinton Energy Co., Ltd., and China Hopebond Eco Tech Co., Ltd. (formerly China Energy Huabang Environmental Protection Technology Co., Ltd.), enabling the Group to cover industrial heater R&D and manufacturing, thermal engineering, energy systems, environmental protection technologies, and global trade within a unified operational framework.
With over 20 years of experience in industrial heating equipment manufacturing and system design, Sinton Group now serves more than 60,000 clients across 120+ countries and regions, providing complete heating solution chains from preliminary engineering design and customized heater supply to installation guidance and long-term technical support.
Supported by a modern industrial base of 20,000 sqm dedicated to production and R&D, together with 10,000 sqm for headquarters and logistics, Sinton holds comprehensive certifications including EAC, Ex, CE, ISO, and Pressure Vessel Design and Manufacturing Licenses, owns 200+ patented technologies, and has been recognized for innovations such as the Graphene-Nano Quartz Electric Tubular Heating Element, awarded the Provincial Innovation Gold Award, while also contributing to the formulation of Chinese industrial heater industry standards.
Sinton’s heating solutions are widely applied in industrial equipment, petroleum and mineral processing, machinery manufacturing, dyeing and printing, tooling and mold industries, light industry and textiles, industrial consumables, plastic machinery, medical equipment and heavy industry, as well as construction engineering, precision processing, energy services, engineering construction, and industrial drying systems.

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