Description
Boiler Thermocouple is a heavy-duty duplex K-Type temperature sensor designed for accurate temperature monitoring and reliable operation in industrial boilers, furnaces, and other high-temperature process equipment. Manufactured with a durable SS310 stainless steel sheath, this thermocouple is engineered to withstand prolonged exposure to elevated temperatures while delivering dependable performance in demanding industrial environments.
Boiler thermocouples play an important role in both process control and equipment safety. In industrial heating systems, they provide accurate temperature feedback for combustion control, burner management, and thermal efficiency. In many gas-fired systems, thermocouples are also used as part of flame supervision or safety interlock arrangements, helping ensure safe system operation when integrated with appropriate control equipment.
The AKFD-10D features a duplex K-Type sensing configuration, housing two independent sensing elements within a single 6 mm SS310 sheath. If one sensing element reaches the end of its service life, operators can switch to the second junction, allowing temperature monitoring to continue while replacement is planned. This redundancy helps minimize unexpected downtime in continuously operating boiler systems.
With a temperature range of 0°C to 850°C, 2600 mm insertion length, and a flameproof die-cast aluminium terminal head rated IP67, the sensor is suitable for hazardous industrial environments such as boiler rooms, power plants, refineries, petrochemical facilities, and process heating systems. The double cable entry supports independent wiring for both sensing elements, simplifying integration into industrial automation and safety systems.
Manufactured by Aavad Instrument Pvt. Ltd., the Boiler Thermocouple is available with customized insertion lengths, sheath diameters, thermocouple types, process connections, and optional NABL-traceable calibration for applications requiring documented measurement confidence.
Key Features
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Dual-Signal Duplex Integration Features two completely isolated K-type junctions inside a single probe, providing an active on-site spare for zero-downtime loop switching.
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Heat-Resistant SS310 Protection Armor High-nickel and high-chromium steel body offers top-tier defense against surface scaling and high-heat warping up to 850°C.
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Certified Flameproof IP67 Head Heavy-walled explosion-proof aluminum terminal box contains internal wiring sparks to protect classified boiler-room atmospheres.
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Double Cable Entry Interface Built with dual distinct conduit ports, allowing field teams to pull physically separated control and safety-interlock cables.
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Passive Thermoelectric Core Architecture Operates as a self-powered field instrument, generating linear millivolt loop signals without external power connections.
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Deep-Reach 2600 mm Length Profile Long-reach probe layout is optimally sized to pass through thick refractory boiler brickwork to reach core heat zones.
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Highly Responsive 6 mm Outer Diameter Slim outer geometry balances mechanical structural strength with rapid, precise thermal tracking response times.
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Traceable NABL Certification Available Delivered with formal documentation verifying precision tolerances to fulfill strict regulatory facility safety audits.
Applications
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Industrial Steam Boilers and Combined Cycle Plants Simultaneous control-room monitoring and automated flame-safeguard tracking inside high-capacity boilers.
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High-Temperature Firing Kilns and Refractory Ovens Tracking internal thermal profiles across industrial brick ovens, ceramic kilns, and glass production chambers.
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Gas Turbine Exhausts and Cogeneration Flue Paths High-reliability measurement within turbulent, high-velocity exhaust streams requiring sensor redundancy.
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Petrochemical and Chemical Cracking Furnaces Safe temperature tracking inside volatile hazardous zones, burner blocks, and distillation columns.
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Safety Shutoff Circuits for Commercial Gas-Fired Systems Providing high-integrity flame detection loops to operate main automatic emergency fuel shutoff valves.
Datasheet
FAQs
1. What is a Boiler Thermocouple?
A Boiler Thermocouple is an industrial temperature sensor used to measure temperatures within boilers, burners, furnaces, combustion chambers, and other heating systems. It provides accurate temperature feedback for process control, combustion efficiency monitoring, equipment protection, and integration with industrial automation and safety systems.
2. Why use a Duplex Boiler Thermocouple?
A Duplex Boiler Thermocouple contains two independent sensing elements inside a single protective sheath. If one sensing element fails or reaches the end of its service life, the secondary element can continue operating without interrupting the process. This redundant design minimizes downtime, improves process reliability, and allows maintenance to be scheduled more efficiently.
3. Why is SS310 used for Boiler Thermocouples?
SS310 stainless steel provides superior resistance to oxidation, scaling, and high-temperature corrosion compared to standard stainless steel grades. Its excellent heat resistance makes it an ideal sheath material for continuous operation in industrial boilers, furnaces, kilns, heat treatment equipment, and other high-temperature process applications.
4. Why Choose Aavad Instrument Boiler Thermocouples?
Aavad Instrument Pvt. Ltd. Boiler Thermocouples are manufactured using premium-grade sheath materials and precision engineering techniques to deliver exceptional accuracy, durability, and long operational life. Every thermocouple undergoes stringent quality testing to ensure reliable performance in demanding industrial environments. We also offer customized insertion lengths, sheath materials, process connections, terminal head configurations, thermocouple types, and optional NABL-traceable calibration for applications requiring documented measurement accuracy.
