Patent ID: 6474169
Filing Date: 2002-11-05
Classification: G01L

Abstract:
A diaphragm pressure sensor comprising:a pressure guide member formed of fluoroplastics material so as to receive liquid chemicals therein to be measured; a pressure frame formed of perfluoroalkoxy resin and having a film-treated portion, said pressure frame being integrally connected to said pressure guide member so as to form an integrated liquid-containing part for containing the liquid chemicals; a ceramic diaphragm having an integral pressure sensor, a bonding surface of said diaphragm being bonded to a sensing surface of said film-treated portion opposite a pressure-receiving surface of said film-treated portion, said bonding surface being roughened and bonded to said sensing surface by a cyanoacrylate adhesive having organic amine compounds therein; and a body housing said pressure guide member, said pressure frame, and said diaphragm.