Up To 2000 Deg C Sapphire Tubes, For Industrial

Product Details

Sapphire tubes are the material of choice for the protection of high-temperature thermocouples in corrosive environment. Single crystal sapphire tubes represents a perfect durable alternatice to alumina ceramics (polycrystalline corundum ceramics). Unlike ceramics, single crystal provides 100% gas tightness and higher resistance against corrosion. Customers benefits from higher reliability and from prolonged periods between thermocouple replacements (typically 4x longer) and system shutdowns. Key properties 100% gas-tightness - no pores, perfect environmental insulation prevents the diffusion of ambient atmosphere to the thermocoupleHigh resistance to aggressive environmentsOperating temperatures up to 2000°C - sapphire tubes maintain their characteristics and shape up to its melting point, unlike ceramicr, sapphire tubes do not bend at high temperaturesHigh operating pressures - sapphire tubes generally withstand dozens bar of pressureOutstanding electro-insulation properties Sapphire thermocouple set consists of the outer one-side sealed protective sapphire tube and one or more inner capillaries used for insulation of branches of the thermocouple. Thermocouple wire protection Branches of thermocouple must be electrically insulated and protected against high-temperature corrosion. Even very low concentration of some substances (lead, ...) significantly shorten lifetime of the thermocouple wire. Typically, thermocouple is inserted to ceramic and/or metallic sheath. These materials are chosen according to temperatures and chemical composition of the environment. Sapphire tubes successfully substitute the ceramics tubes that are not resistive against diffusion of metals.  Tempered Sapphire Properties Technology Technical data  Thermocouple wire protection Branches of thermocouple must be electrically insulated and protected against high-temperature corrosion. Even very low concentration of some substances (lead, ...) significantly shorten lifetime of the thermocouple wire. Typically, thermocouple is inserted to ceramic and/or metallic sheath. These materials are chosen according to temperatures and chemical composition of the environment. Sapphire tubes successfully substitute the ceramics tubes that are not resistive against diffusion of metal. Tempered Sapphire Properties Technology Technical data       Lead oxide diffudes through multiple ceramic tubes. Lead oxide is stopped by the single crystal sapphire tube outside protection tube remains perfectly intact. Durability of thermocouples protected by single crystalline sapphire tubes is much higher then in the case of standard ceramics tubes. Even protective tubes of small diameters are sufficiently strong and high temperature resistant. The sapphire caps for thermocouples are the economical choice in many processes and applications such as: refineries cracking units  combustion reactors  incinerators chemical industry  semiconductor industry glass industry Markets in: Delhi, Mumbai, Bangalore, Kolkata, Chennai, Ahmedabad, Pune, Hyderabad,