DEVICE FOR LABORATORY INVESTIGATIONS OF SPECIFIC ELECTRICAL RESISTANCE OF METALS IN WIDE RANGE OF TEMPERATURES

摘要

The essence of the utility model is that the device further comprises a switch, a reference resistor, a DTX sensor and a thermocouple, the current source being connected to a switch whose output is connected to the input of a reference resistor, one output from which is connected to the sample in the chamber, and the second output connected to an analog multiplexer, which in turn is connected to a thermocouple, the output of which is connected to the sample, the DTX sensor is connected to a control microcontroller, the output of which is connected to an analog-to-digital converter The chamber is designed to be cooled. The technical result provides the possibility of increasing the accuracy of the measurement. 3 ill.