Noble Metal Thermocouples

Roxspur Measurement and Control offer Type-R, S and B thermocouples in a variety of wire diameters ranging from 0.15mm to 0.50mm (larger diameters may also be available). Thermocouples can be supplied as bare wire elements, ceramic insulated elements or sheathed thermocouple assemblies.

Ceramic Insulators

Element wires are insulated with recrystallised alumina insulators as standard. The insulator is normally a single continuous piece however shorter sectional insulating beads can be fitted if preferred.

Thermocouple Assemblies

The thermocouple elements are supplied fitted into ceramic closed end protection sheaths which in turn can then be fitted into a high temperature steel sheath if required. A wide range of thermocouple connection heads are available to complete the assembly.

Ceramic Protection Sheaths

RM&C offer ceramic closed end sheaths in aluminous porcelain, recrystallised alumina or silicon carbide. Aluminous porcelain is recommended for temperatures up to 1,400ºC and recrystallised alumina for temperatures up to 1,700ºC. Silicon carbide is recommended for temperatures up to 1,450ºC and is normally used as an outer protection sheath which requires an inner porcelain or alumina sheath to protect the element.

Metal Protection Sheaths

RM&C offer a number of high temperature steels for use as either closed end protection sheaths or as sockets to fix ceramic sheaths to connection heads. Stocked materials include stainless steels in 216 and 310 grades, inoconel 600 and 601, chrome/iron stainless steel 446 and sandvik 253MA nickel chrome. Where a metal protection is used, a ceramic inner sheath is normally used.

Process Connections

Flanged and threaded process fittings are available in carbon steel and stainless steel. These can be supplied as adjustable fittings or fixed welded. Cast iron adjustable flanges are also available.