在线监控型采样装置的研究及应用  

Research and application of on-line monitoring type sampling device

作　　者：张开生 ZHANG Kai-sheng

机构地区：[1]赛摩智能科技集团股份有限公司,221001

出　　处：《衡器》2020年第7期14-18,共5页Weighing Instrument

摘　　要：针对现有的采样设备运行没有过程监测,无法判断每次采样和制样过程的有效性,影响采样精密度稳定性的问题,介绍了在线监控型采样装置的工作原理、技术特点及应用效果。通过采样设备运行监控管理系统在线实时监测采样单元重量和对应的初级子样数目及每个子样量、每个子样量对应的缩分次数及每次缩分后的试样量和总样,与设计及标准采样参数监测比对,实时记录和自诊断各指标是否符合设计和标准要求,汇总运算并输出采样单元所对应的采样比和提取比,可追溯判断每次采样和制样过程的有效性,量化采样系统精度和试样的可信度,使采样精密度长期稳定可靠,在现场应用中取得了良好的实用效果。Because there is no process monitoring in the operation of the existing sampling equipment,it is impossible to judge the validity of every sampling and sample preparation process,which affects the stability of sampling precision.This article introduces the working principle,technical features and application effect of on-line monitoring sampling device.The weight of the sampling unit and the number of the corresponding primary increments as well as the weight of each increment,the number of the reduction times of each increment,the sample size after each reduction and the total sample are monitored on-line by the monitoring and management system for the operation of the sampling equipment,real-time recording and self-diagnosis of compliance with the design and standards are performed by comparison with design and standard sampling parameters.The sampling ratio and extraction ratio of the sampling unit can be calculated and output,the validity of each sampling and sample preparation process can be judged traceably,the precision of the sampling system and the credibility of the samples can be quantified,and the sampling precision can be stable and reliable for a long time,in that way good practical effect has been obtained in field application.

关 键 词：采样精密度 实时监控 采样比 提取比 

分 类 号：TH715.1[机械工程—测试计量技术及仪器]