Leak testing, capsule

Leak Testing. Sealed capsules of sales packages and industrial sources are pressurized in 300 psi helium for 20 minutes. Leak tests are performed on individual capsules in a helium leak detector whose lower limit of detection is 1.0 x 10 8 standard cubic centimeters of helium per second. All capsules must show no detectable leak. 

Leak test method Sensitivity (Pa-mVs) Minimum void in capsule (mm )... 

Third point When observing, open the valve first, seal up both ends of the test hole segment through capsule bulged, and then open the water injection system, offer certain water injection pressure (but less than capsule pressure), for the hole of water injection flow rate and water injection leak volume to achieve dynamic balance, finally measure per unit time of water injection by flow meter, namely water injection water leakage. 

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