口罩阻力测试仪校准及不确定度评定  

Calibration and Uncertainty Evaluation of Mask Resistance Test Instrument

作　　者：李艾橘 张旭斌 李德林[1] 李志得[1] LI Aiju;ZHANG Xubin;LI Delin;LI Zhide

机构地区：[1]广东省计量科学研究院东莞计量院,广东东莞523343

出　　处：《计量与测试技术》2020年第11期103-107,共5页Metrology & Measurement Technique

摘　　要：2019年新型冠状病毒的爆发使医用外科口罩成为保护人民生命健康的必要防护物品。YY 0469-2011《医用外科口罩》规定口罩两侧面进行气体交换的压力差Δp不应大于49Pa。但目前尚没有相关检测仪的校准规范和检定规程,该文对ZR-1200型口罩阻力测试仪关键参数进行校准,并对测得值的不确定度进行评定。流量测得值为8.0L/min,相对扩展不确定度为Urel=2%(k=2);压力测量最大相对扩展不确定度为Urel=3%(k=2)。The outbreak of the new coronavirus in 2019 has made medical surgical masks a necessary protective item to protect people’s lives and health.YY 0469-2011 stipulates that the pressure difference between the two sides of the mask for gas exchange should not be greater than 49 Pa.However,there is no calibration specification and verification regulations for the relevant detector.This article calibrates the key parameters of the ZR-1200 mask resistance test instrument and evaluates the uncertainty of the measurement results.The result of the flow is 8.0 L/min,Urel=2%(k=2);the maximum relative expanded uncertainty of pressure measurement is Urel=3%(k=2).

关 键 词：口罩阻力测试仪 不确定度 校准 

分 类 号：TB9[一般工业技术—计量学]