Description
Flameproof N-Type Thermocouple is a premium industrial temperature sensor engineered for continuous extreme high-temperature measurement in hazardous industrial environments. Designed with an advanced N-Type (Nicrosil-Nisil) sensing element, this thermocouple delivers exceptional long-term stability, superior oxidation resistance, and minimal calibration drift, making it ideal for applications operating up to 1300°C.
Unlike conventional metal-sheathed thermocouples, this model incorporates a Ker-710 ceramic inner protection tube housed inside a robust SS310 outer protection sheath. The ceramic tube provides outstanding resistance to prolonged high-temperature exposure, thermal cycling, oxidation, and aggressive furnace atmospheres where metallic sheaths may experience accelerated degradation. This design is particularly suitable for continuous operation in furnaces, kilns, combustion systems, and metallurgical processes requiring reliable performance at the upper operating limits of Type N thermocouples.
The thermocouple features a heavy-duty SS310 outer sheath (30 × 20 mm OD/ID) with an 18 mm internal ceramic protection tube, providing excellent mechanical protection while maintaining high-temperature durability. A flameproof die-cast aluminium terminal head with IP67 protection ensures safe installation in hazardous and classified industrial locations while protecting electrical connections against dust and water ingress.
With a 1900 mm insertion length, this is one of the longest N-Type Thermocouples in the Aavad product range, making it ideal for deep furnaces, large kilns, reactors, boilers, and industrial equipment where long-reach temperature measurement is required.
Key Features
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Dual-Layer Protective Armor Design Combines a structural SS310 outer metal tube with an inner Ker-710 ceramic sleeve for combined chemical and physical durability.
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Premium Ker-710 Ceramic Inner Tube Impervious to high-heat gas migration and scaling, allowing continuous tracking up to 1300°C without core decay.
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Explosion-Proof IP67 Aluminum Terminal Head Certified flameproof housing isolates electrical terminals to ensure safe operation in classified hazardous zones.
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Ultra-Stable N-Type Nicrosil/Nisil Elements Engineered specifically to eliminate the short-range ordering lattice shifts and drift common in K-type wires.
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Extended 1900 mm Long-Reach Insertion Length Aavad’s longest standard N-type profile, optimized for massive refractory walls, deep furnace chambers, and tall stacks.
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Heavy-Gauge 3.2 mm Sensing Element Thick internal element diameter guarantees excellent structural strength and extended operational lifespan under extreme heat.
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Total Dust-Tight and Waterproof Sealing The IP67 rating ensures complete protection against high-pressure wash-down jets and severe outdoor ambient elements.
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Linear Millivolt Thermal Feedback Loop Provides highly stable, predictable signal tracking directly compatible with modern automation controllers and digital PLCs.
Applications
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Hazardous-Area Petrochemical and Gas Cracking Loops Continuous temperature profiling inside volatile reactor vessels, high-heat furnaces, and chemical distillation towers.
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Utility Power Plants and Industrial Combustion Stacks Reliable tracking of high-velocity flue gases, incinerator exhaust streams, and primary boiler zones.
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Aerospace Testing and Gas Turbine Manifolds High-accuracy monitoring of turbine combustion paths, jet engine test cells, and thermal exhaust configurations.
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High-Temperature Smelting Kilns and Annealing Ovens Long-reach thermal regulation throughout industrial glass production, ceramic firing kilns, and metal foundries.
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Classified Hazardous Atmosphere Heat-Treatment Systems Stable temperature management for metal carbonitriding, hardening, and vacuum tempering processes.
Datasheet
FAQs
1. What is a Ceramic Protected N-Type Thermocouple?
A Ceramic Protected N-Type Thermocouple is a high-temperature sensor that uses a Ker-710 ceramic protection tube to shield the Nicrosil-Nisil sensing element from extreme heat, oxidation, thermal shock, and aggressive furnace atmospheres. It is designed for continuous temperature measurement in demanding industrial applications at temperatures up to 1300°C.
2. Why is ceramic protection used instead of a metal sheath?
Ceramic protection tubes provide superior resistance to prolonged exposure at extremely high temperatures, oxidation, and corrosive furnace atmospheres. While metal sheaths offer greater mechanical strength and impact resistance, ceramic protection delivers better thermal stability, improved resistance to chemical attack, and a longer service life in many continuous high-temperature industrial processes.
3. Where are Ceramic Protected Flameproof N-Type Thermocouples used?
Ceramic Protected Flameproof N-Type Thermocouples are widely used in industrial furnaces, kilns, power plants, petrochemical facilities, chemical processing plants, heat treatment systems, metallurgical industries, aerospace testing, glass manufacturing, ceramic production, and hazardous-area process applications where accurate and reliable high-temperature measurement is essential.
4. Why choose Aavad Instrument Flameproof N-Type Thermocouple?
Aavad Instrument Pvt. Ltd. Flameproof N-Type Thermocouples are manufactured using premium-quality Nicrosil-Nisil sensing elements, high-grade Ker-710 ceramic protection tubes, and rugged industrial construction to deliver outstanding accuracy, long-term stability, and reliable performance in hazardous and high-temperature environments. We offer customized insertion lengths, process connections, ceramic sheath options, terminal head configurations, and sensing arrangements to meet the specific requirements of demanding industrial applications.
