【摘要】 塑料量器实际容量的校准尚无国家校准规范,本文论述了当前校准塑料量器容量偏差的校准方法和存在问题,并对塑料量器的体膨胀系数的计算进行概述,指出不同材质的塑料量器具有不同的体膨胀系数,选取两个不同温度点测量纯水的表观质量可以求算未知塑料材质的体膨胀系数,为计量检测人员校准塑料量器提供参考。更多还原

【Abstract】 There is no national calibration standard for the calibration of the actual capacity of volumetric instruments of plastic. This paper discusses the current calibration methods and existing problems for the calibration of the capacity deviation,and summarizes the calculation of the cubic expansion coefficient. This paper points out that different plastic materials have different cubic expansion coefficients. Selecting two different temperature points to measure the apparent mass of pure water can calculate the cubic expansion coefficient of unknown plastic material. This paper provides a reference for the calibration of plastic volumetric instruments for metrological personnels.更多还原