The base-metal element is available in two basic forms:
(1) Bare Wire and Beads - normally requires additional protection from the medium being measured.
(2) Mineral Insulated - can be used on its own, except in particularly severe conditions such as in aluminium or brass foundries.
The information below provides a selection guide for Base Metal thermocouple sheathing material. It covers only the most commonly supplied thermocouples. We specialise in “Made to Order” units and will quote against your specifications.
The recommended sheath temperature is limited by the thermocouple range. For higher temperatures, see Rare Metal Thermocouples.
TYPE CODE RECOMMENDED MAX TEMP REMARKS
316 SS - 870°C: Good corrosion resistance
446 SS - 1090°C: For use where sulphur is present
INCONEL 600/601 - 1150°C: Not to be used where sulphur is present
253 MA 253 - 1100°C: Economic replacement for Inconel 600 \
Metal Ceramic LT -1 - 1370°C: Used in copper, brass and steel industry
Plumbargo VG - 1350°C: Used in brass foundries
Silicone Carbide SIC - 1650°C: Used in aluminium industry
Aluminous Porcelain IAP - 1500°C: General purpose furnace applications
Coated 1100 Series - 1160°C: Used in aluminium industry
Hexoloy® HEX - 1650°C: Most corrosive/erosive environments
Syalon ® SY - 1150°C: Used in aluminium industry
Hexoloy® Registered trade mark of Carborundum Company.
Syalon® Registered trade mark of Cookson.
Chromel® Registered trade mark of Hoskins Manufacturing.
Alumel® Registered trade mark of Hoskins Manufacturing.
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.
We are Australia's longest established and largest manufacturer of thermocouples and resistance temperature sensors, with operations in Sydney, Melbourne, and Brisbane.
We are a leading exporter of temperature sensors to Asia, Southeast Asia, India, North and South America, Africa, Europe, and South Pacific.
A dedicated team of people support Pyrosales. We design, custom-engineer, and market a comprehensive product range. Our expertise and capability allow us to service some of the world's leading companies in industries as diverse as glass, iron and steel, petrochemical, aluminium, power generation, food, plastics, and aerospace.