Piezoelectric pressure and/or temperature transducer

Piezoelectric transducer, notably for pressure and/or temperature of the type comprising a block of piezoelectric material having an external element (12) sensitive to a pressure and notably to a pressure to be measured and at least one internal element (25) capable of vibrating under the action of an electric stress, the internal element normally not being subjected to the direct action of said pressure and connected to the external element to receive forces corresponding to this pressure, characterized in that the external element (12) has a tubular form designed to receive the pressure on its external face (16) and the internal element is in the form of a plate (25) placed in the tubular element in a plane substantially parallel to its longitudinal direction, the opposite longitudinal edges of this plate each being connected by a respective connecting element (30, 31) to the internal face of the tubular element (16) for the transmission of said forces to the plate in a transverse direction.