A pressure sensor device comprising: - a casing (2a, 3a) defining a chamber (6, 20) and a fluid inlet passage (14a, 14b) of the chamber (6, 20), the casing comprising a first casing part and a second casing part, - a pressure sensor having a sensor body with a cavity and a membrane, the sensor body being completely accommodated in the chamber (6, 20) such that the membrane is susceptible to deformation under the action of the pressure of a fluid present in the fluid inlet passage (14a, 14b), - a pressure/voltage transducer unit, which includes the pressure sensor and a circuit arrangement to which the pressure sensor is electrically connected, the circuit arrangement including a circuit support at least partially accommodated in the chamber (6, 20), wherein the first casing part forms said fluid inlet passage (14a, 14b), designed to come into contact with the fluid subject to measurement, and defines the positioning of said pressure/voltage transducer unit, wherein the second casing part is designed to protect said pressure/voltage transducer unit and to enable electrical connection between the pressure/voltage transducer unit and an external connection wiring, wherein the sensor body is not rigidly associated to the casing (2a, 3a) and/or other parts of the device (26, 27, 30, 35), i.e. it is mounted elastically or in a moveable manner with respect to the casing (2a, 3a) and/or to said other parts (26, 27, 30, 35) inside the chamber (6, 20), preferably through at least one seal element or gasket. wherein the circuit arrangement comprises an electric connector to allow said electrical connection, the electric connector including connection terminals integrated in the second casing part and each having a first portion which is extended inside the chamber (6, 20) and a second portion which is extended outside the chamber (6, 20), wherein - interposed between the first portion of the connection terminals and the circuit support are elastic contact elements, the elastic contact elements being configured and arranged to extend in a compression condition between the first portion of a respective connection terminal and the circuit support, - the elastic contact elements are electrically connected, preferably fixed mechanically and/or through welding, to the circuit support. - a casing (2a, 3a) defining a chamber (6, 20) and a fluid inlet passage (14a, 14b) of the chamber (6, 20), the casing comprising a first casing part and a second casing part, - a pressure sensor having a sensor body with a cavity and a membrane, the sensor body being completely accommodated in the chamber (6, 20) such that the membrane is susceptible to deformation under the action of the pressure of a fluid present in the fluid inlet passage (14a, 14b), - a pressure/voltage transducer unit, which includes the pressure sensor and a circuit arrangement to which the pressure sensor is electrically connected, the circuit arrangement including a circuit support at least partially accommodated in the chamber (6, 20), - interposed between the first portion of the connection terminals and the circuit support are elastic contact elements, the elastic contact elements being configured and arranged to extend in a compression condition between the first portion of a respective connection terminal and the circuit support, - the elastic contact elements are electrically connected, preferably fixed mechanically and/or through welding, to the circuit support.