ET621 push-in thermocouple probes with terminal head and replaceable insert are intended for industrial measurement of high temperatures of hot gases and fluids at pressure ca. 1 bar. 

The main applications are combustion control, metal-, cement-, ceramic- and glass industries. 

Depending on the needs of application, single or double thermocouple of most common type, protection tube of specific size and material, various terminal heads, process connection fittings and outputs can be supplied.