Patent ID: 9074952
Filing Date: 2015-07-07
Classification: G01L

Abstract:
1. Sensor for measuring pressures in low-viscosity media for use in injection molding, comprising: a housing defining a projection with an axis A running through the projection, a diaphragm which has two opposite sides and is permanently connected contacting the housing, a first one of the two opposite sides of the diaphragm defines a flat end face that is exposed to a pressure space, a second one of the two opposite sides being disposed facing the projection of the housing, wherein a measuring element which can infer a pressure prevailing in the pressure space on the basis of deflection of the diaphragm is supported by the projection and arranged behind the second side of the diaphragm and surrounded by the housing, wherein a pressure sleeve is arranged coaxially with the housing axis A outside the housing, said pressure sleeve is tightly connected by a connection contacting the end face of the diaphragm, and on the side of this connection disposed away from the pressure space, there is a gap that separates the pressure sleeve from the housing, wherein the force path from the pressure space extends axially in the direction away from the pressure space in a region across the end face, the measuring element and the projection of the housing, wherein said gap extends axially further than the region of the force path across the measuring element in the direction away from the pressure space.