Pressure sensor

• Main Authors: Rossberg, Andreas, Drewes, Ulfert
• Format: Patent
• Language: English
• Published: 24.09.2019
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

A versatilely usable pressure sensor is described, which has a ceramic pressure measuring cell (5) clamped in the pressure sensor with interpositioning of a seal (1) outwardly sealing an interior of the pressure sensor and loadable via an opening (3) of the pressure sensor with a pressure (p) to be measured, and whose seal (1) comprises a film (21) of a thermoplastic material, especially polytetrafluoroethylene (PTFE), clamped (in an axial direction and extending perpendicularly to planes of the sealing surfaces (25, 27)) between a form-retaining, planar sealing surface (25) of the pressure measuring cell (5) and a form-retaining sealing surface (27, 27′) of a counterbody (19, 19′) outwardly surrounding the opening (3), characterized in that the film (21) includes a first film segment (23), which is clamped between the sealing surface (25) of the pressure measuring cell (5) and the sealing surface (27, 27′) of the counterbody (19), and the film (21) includes a second film segment (29), which extends over a lateral surface (31) of the counterbody (19, 19′) different from the sealing surface (27, 27′), and which is connected with the counterbody (19, 19′) on the lateral surface (31) via a connecting layer (33) of a material serving as bonding agent for the material of the film (21), especially perfluoroalkoxy-polymer (PFA), arranged on the lateral surface (31).