TEMPERATURE METER AND METHOD OF MEASUREMENT Russian patent published in 2019 - IPC G01K7/16 

FIELD: measurement technology.

SUBSTANCE: group of inventions relates to temperature measuring transducers with an algorithmic correction of measurement errors. Invention can be used to convert the current temperature value into a digital code and transfer it to an external device. Method of temperature measurement includes the correction of the measuring path, which consists in measuring the voltage drop at the first standard resistance – the minimum, measuring the voltage drop at the second standard resistance – the maximum, measuring the voltage drop across the resistance thermometers and correcting the measurement results. Measurement is carried out in cycles, before each of which the correction of the measuring path is carried out. Temperature meter contains a test signal driver with reference impedances, a current source whose output is connected to a multiplexer, an analog-to-digital converter that is connected to the control unit, a protection device, an additional multiplexer, a noise filtering device, a differential amplifier, a reference voltage source, an adder, a transceiver device, resistance thermometers placed on the measurement object, and a secondary power source.

EFFECT: increase of measurement accuracy with increased operational loads.

2 cl, 1 dwg