Temperature also affects the solubility of oxygen in samples.
The net effect of temperature fluctuations is seen as a change in the calibration slope. A circuit measures the resistance of the thermistor and provides an output voltage proportional to the temperature. Thermocouple A thermocouple consists of two dissimilar metals bonded to each other, typically by welding. The bimetallic junction develops a small voltage that varies with temperature. A thermocouple also provides accurate and consistent measurements and operates over a wide temperature range.