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经对全国近20个从事顺磁氧分析器的制造厂家及计量检定单位的调研了解到,JJG662-1990《热磁式氧分析器》所规定的技术指标、技术要求、检定项目和检定方法已与现有仪器的日常检定不相适应,具体表现在以下几个方面:一、规程覆盖范围窄JJG662-1990仅考虑了以顺磁氧原理为基础的热
After nearly 20 countries engaged in paramagnetic oxygen analyzer manufacturers and measurement verification unit of the research learned that JJG662-1990 “thermal magnetic oxygen analyzer” provided by the technical indicators, technical requirements, test items and test methods have been Routine verification with existing instruments do not meet the specific performance in the following areas: First, the narrow range of procedures JJG662-1990 only considered the principle of paramagnetic oxygen based heat