The vertical air permeability test of carbon paper is primarily used to evaluate the gas mass transfer efficiency of the gas diffusion layer (GDL) in fuel cells. Key information includes: The national standard GB/T 20042.7-2024 explicitly requires vertical air permeability as a core testing metric, with units in mL·mm/(cm2·h·Pa), applicable to proton exchange membrane fuel cells for carbon paper characteristic testing. ?

Testing Principle of Carbon Paper Vertical Air Permeability Instrument

By simulating the gas flow path through the thickness direction of carbon paper, tests are conducted using the constant pressure difference method (measuring flow rate under constant pressure difference) or the constant flow rate method (measuring pressure difference under constant flow rate). For example, measuring gas permeability at a 5 Pa pressure difference directly correlates with the drainage performance and mass transfer efficiency of fuel cells.

Product Features

· High-precision electronic airflow and air pressure sensors ensure the accuracy of test data

· Embedded high-speed microcomputer chip control, with a simple and efficient human-machine interface, providing users with a comfortable and smooth operating experience

· Standardized, modular, and serialized design concept, maximizing the fulfillment of users' personalized needs

· Carefully designed UI interface, touch screen operation

· Built-in micro-printer with storage function capable of saving over 50,000 data entries

· 10.1-inch high-definition color LCD screen for real-time display of test data

· Imported high-speed, high-precision sampling chips effectively ensure test accuracy and real-time performance

· Key components selected from internationally renowned brands for stable and reliable performance

· Over-pressure safety protection design

· Energy-saving and environmentally friendly design with ultra-low power consumption

Carbon Paper Vertical Air Permeability Tester Product Parameters: