Description
The Aavad Instrument Model ARFS Regenerator Crown Thermocouple is specifically designed for these demanding glass furnace applications. It uses a Type R (Pt13%Rh/Pt) platinum-rhodium sensing element capable of accurate temperature measurement up to 1600°C, delivering excellent long-term stability for continuous furnace operation.
Modern glass melting furnaces rely on regenerators, refiners, and furnace crown sections to maintain efficient heat recovery, stable melting conditions, and consistent glass quality. These areas operate under extreme temperatures while being exposed to glass vapours, volatile silica compounds, and aggressive furnace atmospheres that can shorten the service life of conventional temperature sensors. Reliable temperature measurement in these zones is essential for optimizing energy efficiency, protecting refractory materials, and maintaining continuous furnace performance.
Unlike standard single-protection thermocouples, this model incorporates a double Ker-710 high-purity alumina ceramic protection system. The inner and outer ceramic tubes provide enhanced resistance to contamination from silica vapours, thermal shock, and mechanical damage, making the assembly particularly suitable for regenerator and refiner zones where ceramic protection is subjected to harsher operating conditions. The ceramic assembly is securely bonded to an SS310 holding tube using a high-temperature alumina bonding compound, ensuring mechanical integrity during prolonged high-temperature service.
The thermocouple is completed with a weatherproof die-cast aluminium terminal head with IP67 protection, safeguarding electrical connections against dust and moisture in industrial environments. By providing stable and reliable temperature data, the sensor supports improved combustion control, efficient heat recovery, optimized glass quality, and extended refractory campaign life.
Key Features
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Double Ker-710 Alumina Sheath Architecture Inner ($15 times 10 text{ mm}$) and outer ($24 times 18 text{ mm}$) 99.7% pure alumina ceramic tubes create a dual-wall defense against aggressive silica gas.
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High-Temperature Alumina Compound Bonding Specialized ceramic cement secures the double sheath assembly to the SS310 metal holding tube to prevent gas bypass.
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Noble Metal Type R Sensing Element ($text{Pt-13%Rh / Pt}$) Rated up to 1600°C, providing superior millivolt signal output and minimal calibration drift in continuous service.
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Purpose-Built Glass Regenerator & Refiner Design Specifically proportioned for high-vapor regenerator arches, checker brick chambers, and refiner passages.
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SS310 Support Holding Sleeve High-chromium steel sleeve provides structural mounting stability and shields ceramic from bending stress near the outer wall.
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Weatherproof IP67 Junction Box Enclosure Heavy-duty die-cast aluminum terminal head completely seals internal electrical terminals against ambient dust, rain, and heat.
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Self-Powered Passive Signal Generation Directly converts high process heat into a precise linear electrical signal without requiring external power supplies.
Applications
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Glass Furnace Regenerator Arches and Checkerwork Chambers Continuous thermal acquisition in heat-recovery regenerators subject to heavy alkali and silica vapors.
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Refiner and Forehearth Roof Temperature Regulation Precision monitoring in glass refining zones where glass quality and thermal uniformity are controlled.
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Melter Crown and Combustion Zone Monitoring Heavy-duty thermal sensing in high-vapor regions of container, float, and specialty glass furnaces.
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Furnace Exhaust and Flue Gas Ducting High-temperature flue gas monitoring upstream of waste heat boilers and emission abatement systems.
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High-Temperature Refractory Testing Kilns Thermal profiling across specialized refractory test furnaces operating up to 1600°C.
Datasheet
FAQs
1. What is a Regenerator Crown Thermocouple?
A Regenerator Crown Thermocouple is a high-temperature industrial temperature sensor specifically designed for continuous temperature measurement in the regenerator, refiner, and crown sections of glass melting furnaces. It provides accurate monitoring of critical furnace temperatures, helping improve process efficiency, protect refractory materials, and maintain consistent glass production.
2. Why is Double Ceramic Protection used in Regenerators?
The regenerator and refiner sections of a glass furnace are exposed to glass vapours, volatile silica compounds, and extreme temperatures, which can accelerate ceramic degradation. Double ceramic protection provides an additional barrier against contamination, thermal shock, and mechanical damage, helping extend thermocouple service life while maintaining reliable and accurate temperature measurement.
3. Why is Type R selected for this application?
Type R Thermocouples, manufactured using platinum-rhodium and platinum conductors, provide outstanding long-term measurement stability, excellent oxidation resistance, and superior accuracy in continuous high-temperature environments. Their dependable performance up to 1600°C makes them well suited for demanding glass furnace applications such as regenerators, refiners, and furnace crowns.
4. What is the maximum operating temperature?
The ARFS Regenerator Crown Thermocouple is designed for continuous operation up to 1600°C under appropriate installation and operating conditions. Proper ceramic protection and correct furnace installation help maximize measurement accuracy and thermocouple service life.
5. Which parts of the Furnace can be monitored?
Regenerator Crown Thermocouples are commonly installed in:
• Regenerator Chambers
• Refiner Sections
• Furnace Crown
• Heat Recovery Zones
• High-Temperature Glass Processing Areas
Continuous monitoring of these critical locations helps optimize furnace efficiency, improve heat recovery, extend refractory life, and maintain consistent glass quality.
6. Why Choose Aavad Instrument Regenerator Crown Thermocouples?
Aavad Instrument Pvt. Ltd. Regenerator Crown Thermocouples are precision-engineered for continuous operation in demanding glass furnace environments. Manufactured with premium Type R platinum-rhodium sensing elements, double ceramic protection, and robust industrial construction, our thermocouples deliver exceptional accuracy, long-term stability, and extended service life. We also offer customized insertion lengths, ceramic protection configurations, flange designs, and process connections to meet the specific requirements of glass manufacturing applications.
