J-Type Thermocouple Temperature Sensor (J3-150 PTFE)

The Type J Thermocouple (Iron/Constantan) with an extra-long 150mm probe is designed for deep-reach applications in industrial processing and high-precision laboratory settings. This sensor is particularly well-suited for use in reducing atmospheres where other thermocouple types might be prone to oxidation.

Technical Specifications

Feature	Specification
Sensor Type	Type J (Iron / Constantan)
Probe Dimensions	6mm (Diameter) x 150mm (Length)
Probe Material	316 Stainless Steel (Corrosion Resistant)
Lead Wire Length	1.5m (1500mm)
Insulation Material	PFA / PTFE (Teflon) - High flexibility & chemical inertness
Color Coding	Black (+) / White (-) [IEC 60584 Standard]
Temperature Range	-40°C to +250°C
Termination	Bare tails (Stripped ends)

Key Features

• Deep Reach Capability: The 150mm probe length is ideal for deep immersion into large storage tanks, vats, or through thick-walled industrial insulation.

• Atmospheric Stability: Type J sensors are highly reliable in vacuum or reducing atmospheres, making them a staple for specific metallurgical and chemical processes.

• Rugged PFA Leads: The Teflon (PFA) insulation provides exceptional protection against caustic chemicals, moisture, and oils while maintaining flexibility.

• Standardised Identification: Features Black/White colour coding per IEC standards to ensure simple and correct installation with J-type controllers.

Applications

• Large-Scale Chemical Processing: Monitoring corrosive liquids in deep mixing vessels.

• Metallurgy: Temperature sensing in vacuum furnaces or heat-treating equipment.

• HVAC & Industrial Ovens: Reaching internal chambers through extensive insulation layers.

• Pharmaceutical & Bio-tech: Suitable for large-scale autoclaves and sterilisation processes.