Type J Thermocouple Probe (316 Stainless Steel Sheath, M20×1.5 Thread, IP65)

Product Overview

Standard Designations & Core Material Foundation

• Thermocouple Type: Type J (Iron/Constantan; compliant with IEC 60584-2 Class 1)
• Key Specification:
  • Sheath: 316 stainless steel; diameter: 8mm (customizable: 3–12mm); length: customizable (e.g., 300mm, 500mm, 1000mm)
  • Connection head: Brass (IP65 protection, waterproof and dustproof)
  • Mounting thread: M20×1.5 (standard industrial thread)
  • Thermocouple wire: Iron (JP) / Constantan (JN), diameter: 0.5mm (customizable: 0.3–1.0mm)
  
  
• Sheath Material: 316 Stainless Steel (corrosion-resistant, high-temperature)
• Chemical Composition: Positive (JP): Pure Iron (Fe ≥99.5%); Negative (JN): Constantan (Cu 55% / Ni 45%)
• Compliant Standards: IEC 60584-2, ASTM E230, GB/T 4989, RoHS 2.0
• Manufacturer: Huona New Material, certified to ISO 9001 and IATF 16949

Key Core Advantages (Centered on Type J Stability & Brass Connection Head)

1. Reliable Performance in Reducing Atmospheres

• Superior Oxidation Resistance: Type J thermocouple exhibits excellent stability in reducing atmospheres and vacuum environments, making it ideal for applications where Type K is prone to degradation.
• Wide Temperature Range: Continuous operation from -40℃ to 750℃, suitable for a broad range of industrial temperature monitoring applications.

2. High Precision & Accuracy

• Class 1 Accuracy: Thermoelectric potential error ≤±1.1℃ (0–200℃) / ±0.4% t (200–750℃), meeting the precision requirements for industrial process control.
• Fast Thermal Response: Compact sheath design provides a thermal response time (τ₅₀) ≤2s in air at 500℃, ideal for dynamic temperature monitoring.

3. Rugged Construction & Environmental Resistance

• 316 Stainless Steel Sheath: Resists corrosion, abrasion, and mechanical impact, extending service life in harsh industrial environments (e.g., petrochemical, marine).
• IP65 Brass Connection Head: Brass head with IP65 protection, preventing ingress of dust and water, suitable for outdoor and wet industrial settings.

4. Secure Mounting & Easy Installation

• Standard M20×1.5 Thread: Enables secure, stable installation in process pipelines, equipment casings, and furnace walls, with adjustable insertion depth.
• Universal Compatibility: Compatible with most industrial temperature controllers, data loggers, and PLC systems.

5. Versatile Processability

• Flexible Termination: Connection head accommodates standard terminal blocks for easy wiring and maintenance.
• Customizable Options: Supports various sheath lengths, diameters, and mounting configurations to meet specific application needs.

Technical Specifications

Product Specifications

Typical Application Scenarios

• Petrochemical & Refining: Process temperature control in reactors, pipelines, and storage tanks exposed to corrosive chemicals (316 corrosion resistance).
• Industrial Furnaces & Heat Treatment: Temperature monitoring in steel mills, forging shops, and heat treatment furnaces (stable performance in reducing atmospheres).
• HVAC & Building Automation: Temperature sensing in boilers, chillers, and large-scale HVAC systems.
• Food & Beverage: Temperature control in ovens, sterilizers, and processing equipment (IP65 protection for washdown environments).
• Laboratory & R&D: Temperature measurement in experimental setups and equipment with reducing atmospheres or vacuum conditions.