Patent ID: 6423197
Filing Date: 2002-07-23
Classification: G01N

Abstract:
In a sensor housing having two opposite ends and accommodating at least one electrode which is brought into electrochemical contact with a process fluid through a porous liquid junction located at one end of said sensor housing and adjacent an inner chamber formed between an inner surface of said sensor housing and an external surface of said at least one electrode, with said inner chamber being filled with an electrolyte, the improvement whereinsaid sensor housing comprises a non-deformable section and at least one deformable section which enables volume of said inner chamber to be variable to compensate for pressure changes, wherein said sensor housing including said at least one deformable section is of one material, and wherein said non-deformable section comprises bracing ribs disposed adjacent said at least one deformable section, whereby contamination by said process fluid into said sensor housing is prevented over a range of temperatures and pressures.