Application
Test the air permeability of battery separators.
Working principle
Gurley method:Measure the time taken to pass 100 ml of air at a constant differential pressure of 1.23 KPa.
Schober method:At constant differential pressure 1.00 kPa±0.01kPa or 2.50±0.01kPa, select the appropriate test duration to measure the air flow volume through the sample via testing the volume.
Bentson method:Under a constant differential pressure of 1.47 kPa, record the airflow
through the test surface after clamping for 5s.