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Fabric water vapour permeability testing apparatus is for assessment of the water vapour permeability ability of fabrics by moisture permeable cup moisture absorption method. The instrument is used to determine moisture (steam) permeability of various types of fabrics (including moisture-permeable coated fabrics) as well as cotton and space cotton for non-woven clothing. Moisture permeability can reflect the perspiration and steam permeability of clothing, one of the important indicators to identify the comfort and hygiene of clothing.

The instrument is used to determine moisture (steam) permeability of various types of fabrics (including moisture-permeable coated fabrics) as well as cotton and space cotton for non-woven clothing.


GB/T 12704.1-2009Textiles-Test Methods for Water Vapor Transmission of Materials-Part 1: Moisture absorption method.
GB/T 12704.2-2009Textiles-Test Methods for Water Vapor Transmission of Materials-Part 2: Evaporation method.
ASTM E96-00Standard Test Methods for Water Vapor Transmission of Materials
BS7209:1990Specification for water vapour permeable apparel fabrics.

Items	Parameters
Temperature range	20℃～40℃±0.5℃
Humidity range	（50±2）%RH～（90±2）%RH
Airflow velocity	0.02m/s～0.3m/s
Test time	0～99.99h
Heating power	600W
Humidification amount	≥250mL/h
Power supply	AC220V，50Hz
Note: ASTM E96-00 standard specifies test temperature at 21℃～32℃±1℃； Recommended test temperature and humidity conditions: 1、General test: temperature (23±1)℃, relative humidity (50±2)%RH 2、High temperature and high humidity test: temperature (38±1)℃, relative humidity (90±2)%RH