| 摘要 |
FIELD: measuring equipment.SUBSTANCE: invention relates to pressure sensors of contact type, in particular, to strain measurement means of cantilever type. Piezoelectric transducer comprises elastic sensitive element of cantilever made of resistive strain gauges, planar and in pairs located on its opposite sides, and electrical leads from side of its sealing, a measuring bridge and indicator connected to measuring diagonal of measuring bridge. Elastic sensitive element operates on bending orthogonal to vector of applied force. Transducer includes at least one or more elastic layers made from thin-film elastic polymer, having same width as elastic sensitive element, but different length and are located on it in series with reduction of length towards its sealing. Elastic layers are rigidly planar-connected to each other and elastic-sensitive element, or are planar free, but are assembled together in sealing in sandwich structure, having property of body of equal resistance to bending.EFFECT: wider dynamic range of strain gauge conversion of stress-deformed state during direct contact exposure on elastic sensitive element of impact pressure of gas or fluid flows into electric signal.3 cl, 6 dwg |
