Problems of the metrological support of measurements of the parameters of optical signals and devices in radar analog nanophotonic systems

The Measuring Channels Calibration in the Industry

“…at each set of temperatures, the voltage comparator is balanced first on R tN , and then with the help of multivalued measure of electrical resistance "1" of accuracy class 0.02 U MO readouts (voltage drop on the multivalued measure of electrical resistance is balanced and returned to R tN , thereby controlling the current's stability in the thermometer's circuit. The actual value of resistance of the reference thermometer sensitive element is determined from the measurements by (1), in which, unlike the classical potentiometric method, the value of the reference measure is not multiple of 10 but is equal to the resistance value:…”

“…where R tN1 is the resistance of the reference thermometer calculated by (1). Based on R txi computed by ( 3) with values from Table [6], the value of temperature t xi in the considered chamber, controlled by the thermometer R tx1 .…”

“…The approach for estimating the result of thermocouples measurements can be based on both the theory of errors, which is quite well developed in metrology and the theory of uncertainty, which has recently spread in Europe. In general, the physical sources of measurement uncertainty coincide with the sources of measurement inaccuracies, which are also sources of errors in the theory of errors [1,2].…”