Patent ID: 6966226

Claim:
A pressure-measuring vessel system for microwave assisted chemical processes, said vessel system comprising: a pressure resistant cylindrical reaction vessel that is otherwise transparent to microwave radiation; a pressure-resistant closure clamped on the mouth of said vessel, said closure being formed of a deformable metal ring and a pressure resistant penetrable septum urged against said mouth of said vessel by said metal ring; a pressure transducer external to said vessel and comprising an adjustable transducer assembly that can move in linear relationship to a housing and with respect to said reaction vessel and a plurality of collet leaves held in flexible relationship to a collet trunk by a garter spring so that when said leaves are attached to said collet trunk by said garter spring, said leaves can flex inwardly and outwardly with respect to the overall axis of said transducer assembly; and a needle extending from and in fluid communication with said transducer, said needle extending through said septum and into said vessel and into fluid communication with the interior of said vessel for permitting the pressure inside said vessel to be applied directly against said transducer while said metal ring and said septum otherwise maintain the pressure resistant characteristics of said vessel.