The thermo-measuring elements are designed for measuring the temperature
in the point of contact between the surface (warmed or cooler) and the
thermo-element. They are a comparatively cheap and the most wide-spread
method for temperature measurement. The thermocouples are produced by
accumulating two conductors from a special measuring alloy in one
common head. Each of this elements has a specific electromotive voltage
at a specific temperature. Each thermocouple is produced and callibrated
for measuring of specific temperature ranges depending on the alloys of
wich it is made. The thermo-resistant elements action is based on the capacity
of cpecific alloys, very often Pt100 to change their resistance when the
temperature is changed.

Each thermoregulator operates with a specific type of thermo-elements.