... range0.02~16500 CM3/M2/day (with large the test chamber, the max testing range can reach 260000cm3/m2/day, ... ≤2mmPressure0.2-0.3Mpa Software interface: Features:1, Automatic test, use friendly,2, High-precision sensors with over-range ... leakage protection function, automatically judges and stops; 5. Double chamber pressure control and pressure automatic balance.6. Superior components , ...