Vacuum package tester and method.

摘要

A vacuum package tester (10) is capable of providing data from which the internal pressure and volume of residual gas within a flexible wall vacuum package (P) exposed to atmospheric pressure may be calculated. A container (12) partially filled with liquid is surrounded by a deformation- absorbing enclosure (15). A vacuum pump (14) reduces the pressure in the head space above the liquid, thereby causing a submerged package (P) to expand. Pressure gauges (19, 20) record the respective pressures in the head space when the package expands by first and second predetermined volumes.