Pyrosales' Rare Metal Thermocouples are used in applications where the temperatures exceed the working range of Base Metal Thermocouples, i.e. 0-1300°C, or where greater accuracy is required such as in Standard Thermocouples, wire size is typically 0.5mm diameter.
Type R Platinum / Platinum 13% Rhodium 1400°C 1650°C
Type S Platinum / Platinum 10% Rhodium 1400°C 1650°C
Type B Platinum 6% Rhodium / Platinum 30% Rhodium 1500°C 1800°C
Rare Metal Thermocouples require protection sheaths to avoid contamination from the process. The information below provides a selection guide for Base Metal thermocouple sheathing material. It covers only the most commonly supplied thermocouples.
Pyrosales specialises in "Made to Order" units and will quote against your specifications:
Metal Ceramic LT-1 -->1370°C Impervious – used in copper, brass and steel industry
Silicon Carbide SIC --> 1650°C Porous – used in aluminium industry
Hexoloy® HEX --> 1650°C Impervious – most corrosive/ erosive environments
Syalon ® SY --> 1150°C Impervious – used in aluminium industry
Mullite H5 1600°C Impervious – no free silica
Recrystallised Alumina RR -->1700°C Impervious – high purity (recommended)
Sillimanite SIL -->1650°C Porous – outer thermal shock protection
Note: LT-1, Sillimanite, Silicon Carbide, Hexoloy and Syalon require an inner impervious sheath. Specific details of each of the above are available on request.
PYROSALES | Total Industrial Sensor Solutions
Pyrosales Pty Ltd is an Australian-owned company. We have developed an international reputation as a specialist manufacturer of standard and precision temperature measurement sensors.
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