Method and apparatus for sensing gas pressure in a container

作者： Walter W. Egee , George R. Weaver

DOI:

关键词: Vacuum level 、 Diaphragm (mechanical device) 、 Proximity sensor 、 Acoustics 、 Container (type theory) 、 Structural engineering 、 Signal 、 Gas pressure 、 Position (vector) 、 Materials science

摘要: A check is provided of the gas pressure in a closed container having its bottom wall snap-action diaphragm type which assumes concave-inward configuration when there vacuum at least predetermined level container, and convex-outward zero or less than said level. test stand applies to exterior sufficient normally assure that it will assume convex outward configuration, then releases applied permit snap configuration. proximity sensor produces an electrical signal representing position diaphragm, differentiated produce indicating speed inward motion diaphragm. The compared with reference, if exceeds indication has occurred adequate. arrangement high-speed checking food containers for leaks.