The methodological bases for the study of the systematic error of temperature measurement by liquid-in-tube thermometers and microthermometers with diminution of the capillary diameter, that is, when passing from thermometers to microthermometers, in the field of predominance of gravitational forces over surface tension forces, are given.
This paper deals with the accuracy of gas flow temperature measurement in natural gas metering systems. The effect of heat exchange between thermometer well and the pipe wall on the accuracy of gas flow temperature measurement is investigated. A mathematical model is proposed to calculate the additional systematic error of gas flow temperature measurement caused by heat exchange between thermometer well and the pipe wall. Calculation results were compared to the corresponding experimental values of this error.
Purpose. Run trial of criteria importance of systematic errors in the mathematical processing of results of measurements of double equally accurate and install the most efficient one. Thus, to determine how to calculate the probability of trust and develop a method of exclusion bias of the mean values of double equally accurate measurements. Methods of resolving the issues raised based on the comparative analysis formulas, experimental results of calculations, developing proposals and reports. Established that the literature significance tests are not the same bias. Results.