Simulation and experimental research on thermometer thermal resistance based on cryogenic thermostat
To investigate the effect of contact thermal resistance of thermometers on temperature measurement,the model of Cernox thermometer was established using a cryogenic thermostat thermostat measurement system;Comparative experiments under different mounting medium and excitation currents in the temperature range of 4.2 K to 20 K were conducted,and the experimen-tal results were corrected using the multi current method.Simulation and experimental results show that the contact thermal resist-ance generated by the thermometer due to its own characteristics has a negligible impact.Under the same excitation current,var-nish 2115 is relatively optimal in reducing contact thermal resistance.
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