Connection device for measuring physical quantities of a fluid

A connection device for measuring at least one physical quantity of a fluid, comprising:

• a tubular connection element having a front connection portion and a rear portion, the tubular connection element defining a through cavity having a proximal opening and a distal opening opposite to each other, which are in the rear portion and in the front connection portion of the tubular connection element, respectively,
• a detection unit configured for detecting at least one physical quantity characteristic of the fluid,
• a control circuit, connected in signal communication with the detection unit,
• wherein the front connection portion of the tubular connection element is connectable, at least at or near the distal opening of the through cavity, to a fluidic system
• and wherein:
• the detection unit is mounted at the front connection portion of the tubular connection element, that is, closer to the distal opening than the proximal opening, and/or
• the through cavity is closed at the front connection portion, that is, closer to the distal opening than the proximal opening, and/or
• the control circuit extends at least partly inside the through cavity at the rear portion of the tubular connection element, and/or
• in at least a part of the through cavity a mass of electrically insulating fixing material is arranged, configured for fixing in position the control circuit and/or at least part of an electrical connector and/or an end portion of a multicore cable for electrical connection of the connection device to an external system, and/or
• the detection unit comprises a relative-type pressure sensor defining an internal cavity, the internal cavity being connected in fluid communication to an ambient pressure by means of a tube, which extends at least in part inside the through-cavity, between the detection unit and the rear portion of the tubular connection element.