| 摘要 |
A method for detecting seal failures during manufacture of an insulated glas s unit. In this method, a partially assembled glass unit is placed within an enclosure and the enclosure is sealed with the partially assembled glass uni t therein. An insulating gas is flowed into and an insulating gas/air mixture is exhausted from the enclosure until the concentration of insulating gas withi n the enclosure reaches a predetermined value. The pressure within the interpa ne space is adjusted to a predetermined ambient gauge pressure which represents a predetermined offset from ambient atmospheric pressure. The panes are presse d against the spacer, sealing the interpane space to yield a sealed insulated glass article. Surface profiles of the first and second panes of the sealed insulated glass article are measured to determine a thickness profile. A fau lt indicator is generated if the thickness profile does not show at least a predetermined deviation of the thickness profile from a predetermined baseli ne profile.
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