立式去污测定仪校准方法研究

Research on calibration method for detergent tester

立式去污测定仪是进行去污试验评价洗涤剂去污力的专用设备,主要应用于洗涤剂产品研发、测试及洗涤剂去污力和抗污渍再沉积能力试验等方面。针对目前国内市场尚无该设备的国家校准规范,该文从立式去污测定仪的物理性能出发,探讨该仪器的计量特性和校准方法,提出适用于该仪器的校准项目和技术指标。为验证该方法,以RHLQ-III型立式去污测定仪为实验对象,对温度偏差、温度波动度、温度均匀度、转速示值相对误差、定时相对误差5个项目进行校准试验。实验结果表明该校准方法准确可靠,有助于计量检定机构开展立式去污测定仪的校准工作。

Thedetergent tester is a specialized device for evaluating the cleaning performance of detergents in stain removal tests.It is mainly used for the research and development,testing,and evaluation of the cleaning and anti-redeposition properties of detergents.Since there is currently no national calibration standard for this device in the domestic market,this article discusses the metrological characteristics and calibration methods of the detergent tester based on its physical properties and proposes calibration items and technical indicators suitable for this instrument.To validate this method,the RHLQ-III detergent tester was used as the experimental object to conduct calibration tests on five parameters:temperature deviation,temperature fluctuation,temperature uniformity,relative error of rotational speed indication relative error of timer.The experimental results demonstrate that this calibration method is accurate and reliable,and helpful for metrological verification institutions to carry out the calibration work of detergent testers.