The improvement of the automation level,space density and time density of surface mete-orological data observation puts forward higher requirements for the measurement and verification work of automatic weather station sensors.Due to the complexity of the measurement standard instrument used in practice,its metrological performance cannot be guaranteed to remain accurate during two consecutive verification/calibration processes.Therefore,taking the period verification of temperature measuring in-struments as an example,a set of water triple point stability checking device is constructed.Check the provincial second-class standard platinum resistance thermometer at the triple point of water by using Shewhart control chart.After undergoing testing and calculations,the second-class standard platinum resistance temperature standard in the provincial metrology laboratory has successfully passed verification.This conclusion is also supported by the verification results of a high-grade standard platinum resistance thermometer.Based on the experimental data of the second class standard platinum resistance during the water triple point period verification,the optimal time for the storage and measurement of the water three point bottle is obtained.The relevant data can also be used as the basis for the stability assessment of measurement standards.
关键词
温度计量/水三相点/期间核查/控制图
Key words
temperature measurement/water triple point/period verification/control charts
维普
万方数据