J Type Hot Runner Plastic Head Thermocouple Temperature Sensing Line

• Customization: Available
• Installation Type: Needle Terminal
• Sensing Type: Thermocouple
• Model NO.: J typer Hot Runner Plastic Head Thermocouple
• Contact: Contactless
• Output Signal Type: Digital Type
• Production Process: Normal Wirewound
• Material: Plastic
• Measuring Medium: Temperature
• IP Rating: IP20
• Certification: CE
• Customized: Accept Customization
• Temperature Range: 0~200℃
• Type: Electric Water Heater Parts
• Theory: Temperature Sensor
• Index Number: J Type
• Armor Wire Diameter: 1.0mm/1.5mm
• Probe Length: 50/100/150/200/250/300mm
• Cable Length: 1m/1.5m/2m(Accept Customization)
• Transport Package: Plastic and Carton
• Specification: SUS, resistance wire
• Trademark: LUJINXUN
• Origin: China
• HS Code: 84779000
• Production Capacity: 5000PCS One Week Can Supply

Product Description

Specification

Type	Electric Water Heater Parts
Theory	Temperature Sensor
Index Number	Type J
Temperature Measurement Range	0~200℃
Armor Wire Diameter	1.0mm/1.5mm
Cable Length	1M/1.5M/2M
Probe Length	50/100/150/200/250/300mm
Can be Customized	Yes

Specification Size

J-type heat flux long probe thermocouple probe armored temperature sensing wire with high precision can be bent and high temperature resistant.

Cable 1M 1.0x50mm 1.0x100mm 1.0x150mm 1.0x200mm 1.0x250mm 1.0x300mm 
Cable 1M 1.5x50mm 1.5x100mm 1.5x150mm 1.5x200mm 1.5x250mm 1.5x300mm 
Cable 1.5M 1.0x100mm 1.0x150mm 1.0x200mm 
Cable 1.5M 1.5x100mm 1.5x150mm 1.5x200mm 
Cable 2M 1.0x100mm 1.0x150mm 
Cable 2M 1.5x100mm 1.5x150mm

(Accept Customization)

If you want other type probe length,wire length or probe diameter, please check our store or connect Customer Service.

Product Description

Product Introduction

J-type long probe thermocouple is a special sensor designed based on the characteristics of J-type (iron-copper-nickel alloy) thermocouple, and its core feature lies in the adaptability of long probe structure to hot runner scene. 

It adopts the design of extended probe, which can go deep into special spaces such as long and narrow hot runner and deep cavity of die, and directly contact the core area of measured medium.

Product Advantage

1.Based on the inherent characteristics of J-type thermocouple (iron-copper-nickel alloy), the long probe thermocouple can stably measure the temperature range of 0-200℃, especially in the middle and low temperature range, showing excellent linearity and sensitivity, and can accurately capture the subtle temperature fluctuations in the hot runner.
2.By adopting the extended probe structure, it can go deep into the special space of the hot runner system, such as the narrow runner and the inside of the pipeline, and directly contact the core area of the measured medium, so as to avoid the deviation of the measuring point caused by the insufficient probe length and ensure that the temperature data reflects the real working conditions.
3.Support a variety of installation methods (such as thread fixing and flange connection), and customize the probe length and fixed interface according to the hot runner structure, without large-scale transformation of the equipment structure.

4.J-type thermocouple with long hot runner probe has become an ideal choice for temperature monitoring of hot runner system by virtue of its combined advantages of "long distance+accurate measurement+durability and economy", especially in industries that rely on stable melt temperature control, such as injection molding, rubber and packaging, which can effectively improve product quality stability and production efficiency.

Product Operate Guide

1. Selection of Thermocouple Type
Choose the appropriate thermocouple type (e.g., K, J, T, S) based on the temperature range of your application. 
2. Installation Preparation
Ensure the thermocouple probe is clean and free of damage (e.g., cracks in the sheath). For accurate readings, position the sensing junction (the tip) directly in the area where temperature needs to be measured—avoid contact with non-target surfaces like walls or pipes, unless measuring surface temperatures.
3. Electrical Connection
Connect the thermocouple wires to a compatible temperature controller, data logger, or meter. Match the positive (usually red) and negative (often blue) leads to the corresponding terminals on the device. Use extension wires of the same thermocouple type to avoid measurement errors from temperature gradients in the connection lines.
4. Operation
Power on the measurement device and allow the thermocouple to stabilize—response time varies by design, but most reach steady readings within seconds. Monitor the display for real-time temperature data. Avoid exposing the thermocouple to excessive vibration, mechanical stress, or corrosive environments beyond its rated limits.
5. Maintenance and Storage
After use, inspect the thermocouple for wear, corrosion, or bending. Clean the probe with a soft cloth or appropriate solvent (avoid abrasive materials). Store in a dry, cool place, coiled loosely to prevent wire damage. Replace the thermocouple if readings become inconsistent or the sheath is compromised.
Follow these steps to ensure reliable, accurate temperature measurements with your thermocouple. Always refer to the manufacturer's specifications for model-specific guidelines.

Product Uses

J-type thermocouple with long heat flux probe is especially suitable for the scene that needs to go deep into narrow space and directly monitor the surface temperature of high-temperature fluid or solid because of its long-distance measurement ability, medium-high temperature adaptability, high cost performance and mechanical impact resistance.

1.Hot runner system of injection molding and mold
2.Extruder and plastic processing equipment
3.Temperature measurement of industrial furnaces and pipelines
4.Food and pharmaceutical processing equipment
5.Engine and power equipment testing
 
The core value of J-type thermocouple with long heat flux probe lies in the combination ability of "long distance and accurate temperature measurement", which is especially suitable for long and narrow space, medium and high temperature environment and scenes requiring direct contact with the measured medium. It has become a key sensor to improve production accuracy and equipment reliability in industries such as injection molding, extrusion, furnaces and food processing.

Packing & Delivery

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