Nova metoda diplomiranja za termične odpornosti termometrov

Industrial platinum resistance thermometer is a widely used temperature measuring instrument. For a long time, the calculation method of CVD equation has been generally used in relevant standards or technical specifications at home and abroad to calibrate and divide it. However, the industrial platinum resistance thermometer calibrated and divided by CVD equation has low accuracy, low stability and large uncertainty, and ni mogoče uporabiti kot standard prenosa .

Most industrial temperature measurement fields or laboratories with low requirements can only use standard platinum resistance thermometers with higher accuracy as traceability transfer standards, but due to various conditions in the actual industrial temperature measurement field, standard platinum resistance thermometers cannot be used, making temperature value transfer and traceability impossible in these places, and actual metrological calibration work cannot be carried out.

The feasibility of calibrating and dividing industrial platinum resistance thermometers using the interpolation formula defined by the ITS-1990 international temperature scale is studied, and the calculation results of the temperature-resistance relationship given by the commonly used CVD equation are compared, and then the differences between the two are given, and the ways and methods of establishing precision industrial platinum resistance thermometers as transfer standards are Raziskovano . z raziskavami in analizo različnih modelov in različnih proizvajalcev industrijskih platinskih toplotnih uporov v različnih temperaturnih območjih, eksperimentalni rezultati, krivulje podatkov in merilne napake, ki jih povzročata dve različni metodi delitve

Eksperimentalni dokaz:

Izvedljiv je uporaba interpolacijske metode njegove -1990 mednarodne temperaturne lestvice za termometri industrijskega platine . v primerjavi z metodo izračuna enačbe CVD za industrijsko kalibracijsko delitev platina

Previously, the national metrology technical institutions of Italy and Canada conducted research on the industrial platinum resistor division method using the international temperature scale interpolation formula. The traditional means to improve the accuracy and stability of industrial resistor temperature measurement are to work hard on component purity, packaging technology, and production process, which lays the foundation for the improvement of temperature value transfer and traceability system of precision platinum resistors and Industrijski platinski upori v moji državi in ​​jih je mogoče široko uporabiti na področju merjenja temperature industrijskega platine .