FIELD: measuring equipment.
SUBSTANCE: device for minor temperature difference measuring is made in form of differential multijunction thermocouple of thermoelectrode wire and uses chromel and copel alloys for thermoelectrode wire. Thermoelectrodes in couples are selected from the same chromel and copel wire batch class and undergo annealing at 750K - 770K by drawing through furnace at 0.06 - 0.08 m/s speed. Thermoelectrodes are cut and labeled to be assembled in the same sequence as in commercial wire coil, and covered by electric insulating coating.
EFFECT: increased measurement precision.
2 cl, 2 dwg
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