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Q: What is a 17mm OD x 13mm ID Aluminous Porcelain Tube used for?
A: This ceramic tube is used to protect thermocouple assemblies operating in high-temperature environments. The closed-end design shields the thermocouple junction from direct contact with the process while allowing accurate temperature measurement in furnaces, kilns, ovens, and heat treatment applications.
Q: Which thermocouple types are typically installed in this ceramic protection tube?
A: The tube is primarily designed for use with base metal thermocouples, including Type J, Type K, and Type N thermocouples. It provides both electrical insulation and mechanical protection, helping extend sensor life in demanding thermal processes.
Q: What maximum temperature can this aluminous porcelain tube withstand?
A: The tube is rated for temperatures up to 1400°C. This makes it suitable for many industrial heating and thermal processing applications where high-temperature performance is essential and standard metallic protection tubes may not be sufficient.
Q: Why would I choose a 17mm ceramic tube instead of a smaller diameter tube?
A: The larger 17mm outer diameter offers increased mechanical strength and durability, while the 13mm inner diameter provides space for larger thermocouple assemblies, additional insulation, or multi-element sensor configurations used in industrial furnace applications.
Q: What are the advantages of the closed-one-end design?
A: The closed end protects the thermocouple tip from direct exposure to gases, dust, combustion products, and other process contaminants. This can improve sensor reliability and reduce the likelihood of premature thermocouple failure in harsh operating environments.
Q: Is this ceramic tube suitable for applications involving thermal cycling?
A: Yes. The tube provides good thermal shock resistance, making it suitable for processes where temperatures regularly rise and fall. This helps minimise the risk of cracking or damage caused by repeated heating and cooling cycles.
Q: Can this tube be supplied in custom lengths?
A: Yes. The tube can be supplied in custom lengths between 50mm and 1200mm. This allows users to match the tube length to the specific requirements of their thermocouple installation and process equipment.
Q: Which industries commonly use large-diameter ceramic thermocouple tubes?
A: These tubes are commonly used in heat treatment plants, industrial furnaces, steel processing, ceramics manufacturing, laboratories, power generation, glass production, and other high-temperature process industries where durable thermocouple protection is required.
Q: When should I choose a ceramic tube instead of a metal protection tube?
A: Ceramic tubes are often preferred when operating temperatures are extremely high or when electrical insulation is important. Aluminous porcelain provides excellent heat resistance and remains stable in applications where some metallic protection tubes may oxidise or degrade.
Q: Does this aluminous porcelain tube comply with recognised standards?
A: Yes. The tube is manufactured to DIN VDE 0335 C610 standards and is supported by REACH, RoHS, Conflict Minerals, and ISO 9001 compliance documentation. This makes it suitable for use in regulated and quality-controlled industrial environments.
