LFY-229 Digital Fabric Permeability Tester

Main application
This instrument is used to test the breathable performance of various textile materials such as woven fabrics, knitted fabrics, non-woven fabrics, coated fabrics, and industrial filter papers under a certain pressure.
Instrument features
The instrument measures pressure with a high-precision pressure sensor, and flow rate with a flow sensor. The test pressure can be adjusted, and data collection and processing are completed by a microcomputer. The breathable rate of the sample and the test pressure are displayed.
Technical specifications
1. Test head: 5cm², 20cm², 50cm², 100cm²
2. Test pressure range: 0 - 3000 Pa, accuracy: 0.5%
3. Maximum breathable rate measurement value: 20000 mm/s, accuracy: ±1%
Applicable standards (different standards require different accessories)
GB/T 5453-1997 Textiles - Test of fabric breathability; ISO 9237; JIS L 1096A
GB/T 6719-2009 Technical Requirements for Bag-type Dust Collectors 9.2 Gas Permeability of Filter Materials 
FZ/T 62048-2024 General Technical Specifications for Disposable Bedding Products 
GB T 27869-2011  Test Methods for Filter Materials of Electro-Dust Bag Composite Filters
HJ/T 324-2006 Technical Requirements for Environmental Protection Products - Filter Materials for Bag-type Dust Collectors 5.1.1, 5.1.2, 5.1.3
HJ/T 326-2006 Technical Requirements for Environmental Protection Products - Coated Filter Materials for Bag-type Dust Collectors 5.7
JB/T 8532-2008 Pulse Blowing Type Bag-type Dust Collectors
JB T 8533-2010 Rotating Reverse Blowing Type Bag-type Dust Collectors Standards
JB/T 10341-2002 Bag-type Dust Collectors 
JB/T 10921-2008 Coal-fired Boiler Flue Gas Bag-type Dust Collector 4.23.1
JC/T 819-2007 Cement Industry CXBC Series Bag-type Dust Collector 5.2.5.1
GB 12625-1990 Technical Conditions for Filter Materials and Filter Bags for Bag-type Dust Collectors 
JC/T 837-2013 Multi-chamber Reverse Blowing Dust-Removal Bag-type Dust Collector 4.1.7 
FZ/T 64113-2024 Anti-static Fabric Without Molten Drip 
GB/T 17591-2025 Flame Retardant Fabrics 
GB 28408-2025 Protective Clothing - Insect Protection Clothing 
GB 28895-2025 Protective Clothing - Oil-resistant, Easy-to-Wash and Anti-static Protective Clothing 
GB 31421-2025  Head Protection - Anti-static Work Cap

GB 38300-2025 Protective Clothing - Thermal Insulation Clothing 
ASTM D737-18 (2023) Standard Test Method for Air Permeability of Textile Fabrics