FZ/T 98020-2019 "Fabric moisture permeability performance tester" standard specifies the basic functions, parameters, test methods, inspection rules and marking, Encasement, transportation and storage requirements of the moisture permeability performance tester. This standard applies to test instruments that use the hygroscopic method or Method of evaporation to determine the moisture permeability performance of fabrics, ensuring the accuracy and comparability of the test process. This standard refers to a series of relevant documents, including Encasement, Storage and Transportation Marks, Electrical Equipment Safety Requirements and General Specifications for Electronic Measuring Instruments, to support the correct application and safe use of test instruments.