High-performance cartridge heaters with internal thermocouple

 

If the thermocouple is insulated from the sheath of the cartridge heater, then the cartridge heater on the side of the regulation must be grounded. Standard methods of location of the thermocouple for high-performance cartridge heaters are shown on the picture.

Standard types of thermocouples.

J – -20 °C – 750 °C Iron – magnetic – positive pole.
Copper / nickel – non-magnetic – negative pole.
K – -20 °C – 1,250 °C Nickel / chromium – non-magnetic – positive pole.
Nickel / aluminium – magnetic – negative pole.