Ceramic Thermowell Materials

If a fitting other than the standard thread is required specify by adding the option code from the optional fitting table as a suffix to the part number.

Ceramic thermowell materials.

Select the tube size from the table and specify the part number shown for the desired material c30 or c98 replacing the l and x with the required length in inches. Ferritic stainless steel with excellent resistance to sulphurous atmospheres at high temperature however due to its low strength at high temperature thermowells made from this material should be mounted vertically. The list has been carefully prepared and takes into consideration such factors as contamination electrolysis catalytic reaction and other variables. Steel and 316 stainless steel protection tubes are more durable than ceramic protection tubes.

Standard materials are recommended wherever possible. In conjunction with the appropriate thermocouple the thermowell has a considerable effect on the temperature sensor s measuring accuracy and service life. Ceramic protection tubes are used for applications where contamination from hostile environments or the cutting action of concentrated and direct flame impingement are factors. Thermowell materials for various average applications are listed in the following table.

Used in heat treatment processes iron and steel furnaces gas production plant and it has some useful resistance to molten lead. Designed for use with thermocouples and rtds in large nonpressurized tanks these protection tubes are available in long lengths at a lower cost than thermowells. 316 stainless steel protection tubes are extremely resistant to corrosive chemicals and they can handle higher temperatures than steel. Materials and construction the thermowell protects the instrument from the pressure flow induced forces and chemical effects of the process fluid.

Tsh220 with ceramic thermowell for temperatures up to 1800 c 3272 f. Both the thermowell materials temperature resistance and their resistance to aggressive media are decisive.