石油产品酸值测定仪校准方法
魏子勇1,张森2,郭波2,黄清波2,郑鹏2,马丽3,翟丕渠4
1.山东省生态环境监测中心,济南 250013; 2.山东省计量科学研究院,济南 250014; 3.山东省水泥质量监督检验站,济南 250022; 4.淄博三合仪器有限公司,山东淄博 255000
Calibration method of acid value tester for petroleum products
魏子勇1,张森2,郭波2,黄清波2,郑鹏2,马丽3,翟丕渠4
1. Shandong Ecological and Environmental Monitoring Center, Jinan 250013, China; 2. Shangdong Institute of Metrology, Jinan 250014, China; 3. Shandong Province Laboratory for Quality Supervision & Test of Cement, Jinan 250022, China; 4. Zibo Sanhe Instrument Co., LTD., Zibo 255000, China
摘要:通过分析石油产品酸值测定仪工作原理,参考相应的国家技术规范,建立石油产品酸值测定仪的校准方法。使用酸值(以KOH计)为( 0.11±0.03) mg/g的酸值标准物质对以颜色指示剂法为原理的石油产品酸值测定仪进行校准,设定校准项目:示值误差为-0.01 mg/g;重复性为0.02 mg/g。对石油产品酸值测定仪示值误差测量结果的不确定度进行评定,扩展不确定度为0.04 mg/g(k=2)。该校准方法计量特性满足校准要求,可用于评价石油产品酸值测定仪的性能。
Abstract:By analyzing the working principle of the petroleum product acid value tester and referring to the corresponding national technical specifications, the calibration method of the petroleum product acid value tester was established. Calibration items such as indication error and repeatability were put forward. Calibration items and technical indicators were obtained by using (0.11±0.03) mg/g acid value reference material to calibrate the instrument based on the color indicator method. Indication error was -0.01 mg/g. Repeatability was 0.02 mg/g. The uncertainty of the error measurement results was evaluated, and the extended uncertainty was 0.04 mg/g (k=2). The calibration characteristics of the calibration method met the calibration requirements and could be used to evaluate the performance of the petroleum product acid value tester.
关键词:石油产品酸值测定仪;校准方法;性能评价;不确定度
Keywords:petroleum product acid value tester; calibration method; performance evaluation; uncertainty
本文引用格式:
魏子勇,张森,郭波,等.石油产品酸值测定仪校准方法[J].化学分析计量,2019,28(6):122-124.
WEI Z Y,ZHANG S,GUO B,et al. Calibration method of acid value tester for petroleum products[J]. Chemical analysis and meterage,2019,28(6):122-124.
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