A miniaturized device for pressure measurements over a very wide range and for gas concentration measurements, comprising: - at least one first electro-mechanical miniaturized sensor member configured to detect a first pressure value (P 1), in a first sub-range of measurable pressures, and generate a first electrical signal (S 1) representative of the first pressure value (P 1); - an ionization-based detection member, configured to detect a second pressure value (P 2), in a second sub-range of measurable pressures, and comprising at least one ionization source, an ionization region, ion extraction means, and at least one ion detector, configured to detect ions and generate a second electrical signal (S 2) depending on the amount of ions detected and representative of the second pressure value (P 2); - controlled flow opening/closing means, configured to control a fluidic communication between the ionization-based detection member and an environment in which the first sensor member is located; - electronic processing means, operatively connected to said first sensor member and ionization-based detection member, and configured to determine a measured pressure value based on said first (S 1) and second (S 2) detected electrical signals; the electronic processing means being further operatively connected to the controlled flow opening/closing means and further configured to control the condition thereof; - interface means, operatively connected to said electronic processing means and configured to provide in output said measured pressure value, wherein: - said first sensor member, ionization-based detection member, controlled flow opening/closing means, electronic processing means and interface means are comprised in a single integrated device; - the controlled flow opening/closing means are configured to take, in a controlled manner: a closed condition, in which they seal and insulate the ionization-based detection member with respect to the environment to which the first sensor member is exposed; a micro-fluidic opening condition, in which they inhibit a macro-fluidic communication, while allowing a micro-fluidic communication between the ionization-based detection member and the first sensor member; a macro-fluidic opening condition, in which they allow a macro-fluidic communication between the ionization-based detection member and the first sensor member, so as to expose them to a same pressure condition; - the ionization-based detection member is further configured to measure a gas concentration, under micro-fluidic opening condition of the controlled flow opening/closing means, in presence of a pressure belonging to the first sub-range, and to measure a gas concentration, under macro-fluidic opening condition of the controlled flow opening/closing means, in presence of a pressure belonging to the second sub-range. - at least one first electro-mechanical miniaturized sensor member configured to detect a first pressure value (P 1), in a first sub-range of measurable pressures, and generate a first electrical signal (S 1) representative of the first pressure value (P 1); - an ionization-based detection member, configured to detect a second pressure value (P 2), in a second sub-range of measurable pressures, and comprising at least one ionization source, an ionization region, ion extraction means, and at least one ion detector, configured to detect ions and generate a second electrical signal (S 2) depending on the amount of ions detected and representative of the second pressure value (P 2); - controlled flow opening/closing means, configured to control a fluidic communication between the ionization-based detection member and an environment in which the first sensor member is located; - electronic processing means, operatively connected to said first sensor member and ionization-based detection member, and configured to determine a measured pressure value based on said first (S 1) and second (S 2) detected electrical signals; the electronic processing means being further operatively connected to the controlled flow opening/closing means and further configured to control the condition thereof; - interface means, operatively connected to said electronic processing means and configured to provide in output said measured pressure value, - said first sensor member, ionization-based detection member, controlled flow opening/closing means, electronic processing means and interface means are comprised in a single integrated device; - the controlled flow opening/closing means are configured to take, in a controlled manner: a closed condition, in which they seal and insulate the ionization-based detection member with respect to the environment to which the first sensor member is exposed; a micro-fluidic opening condition, in which they inhibit a macro-fluidic communication, while allowing a micro-fluidic communication between the ionization-based detection member and the first sensor member; a macro-fluidic opening condition, in which they allow a macro-fluidic communication between the ionization-based detection member and the first sensor member, so as to expose them to a same pressure condition; - the ionization-based detection member is further configured to measure a gas concentration, under micro-fluidic opening condition of the controlled flow opening/closing means, in presence of a pressure belonging to the first sub-range, and to measure a gas concentration, under macro-fluidic opening condition of the controlled flow opening/closing means, in presence of a pressure belonging to the second sub-range.