Vacuum decay leak detection with correction for interferences

A system for improved vacuum decay leak detection testing, comprising:

• a testing chamber for enclosing a container to be tested such that the testing chamber is sealable from an ambient environment except for a port to which a testing system including a vacuum pump is connected, the vacuum pump being capable of creating a substantially absolute vacuum within the testing chamber in a short period of time, an absolute pressure transducer for sensing vacuum pressure within the testing chamber and conveying measured pressure to a controller, a differential pressure transducer for monitoring increases in pressure within the testing chamber after pressure within the testing chamber has fallen to a predetermined pressure as sensed by the absolute pressure transducer,
• a clock used to measure a time interval between each testing cycles in which the testing chamber is not under vacuum or at low pressure conditions, the clock being connected electronically to the controller such that time interval measured by the clock is conveyed to the controller as time data;
• data storage electronically storing one or more sets of time data, the data storage being electronically connected to the controller, wherein the controller transforms measured pressure into corrected pressure through an algorithm that uses time data to remove one or more interferences introduced to the system between testing cycles when the testing chamber is not under vacuum or low pressure conditions, and
• the controller transmits the corrected pressure to a display for determining if a leak is present in a package.