ZERO- THERMOSTAT OF MODIFIED CONSTRUCTION Russian patent published in 2009 - IPC G01K7/02 

FIELD: measurement technology.

SUBSTANCE: this device refers to the measurement technologies and is used for temperature control of bearing junctions of differential thermocouple contacts. Device consists of cylinder chamber with transparent wall with low thermal conduction. It is filled with working substance in the solid phase initially. Thermoelectric module is fixed between two thermal plate made of the material with high thermal conduction and one of the plates is fixed at the upper base (hot junction) of thermoelectric module, and the other has good thermal contact with the bottom base of the thermoelectric module (measuring junction). The heat from the hot junction of the thermoelectric module is brought by the heat-conducting plate to the upper base of the cylindrical chamber, and the measuring junction of the thermoelectric module cools the bottom base of the cylindrical chamber. The construction is located in heat insulating jacket, bypass pipe is used to compensate the changes in volume during phase transfer of the working substance.

EFFECT: invention improves the security of the construction and accuracy of temperature control during long operation.

1 dwg