Abstract: The compact scent delivery system (300) comprises: —a compact scent delivery device (100, 200), —an air flow mixing unit (400) comprising: 5—an inlet (405) for scented air, configured to be connected to an outlet (125) of scented air of the compact scent delivery device, —an outlet (410) for mixed scented air directed at a smelling port (415), —a conduit (420) connecting the inlet for scented air and the outlet for mixed diluted scent air and 0—at least one element of: —an inlet (425) for fresh air, configured to be connected to a fresh air delivery apparatus, said inlet delivering fresh air into the scented air stream between the inlet for scented air and the outlet for mixed scented air and/or 5—an outlet (430) for waste scented air, configured to be connected to an air flow retrieval apparatus and/or a waste air exhaust, said outlet retrieving scented air from the scented air stream between the inlet for scented air and the outlet for mixed scented air to reduce the air flow either for subsequent dilution

Abstract: A mass spectrometer with a wide dynamic range, having:—a source (2) of ion beams,—an analyzer (4) for the ion beams generated by said source (2),—a detector (6) for the ions separated by said analyzer (4),—a treatment stage (8) for the analogue signal A generated by said detector, to obtain two separate signals A1=mA and A2=nA, where m>n, characterised by comprising:—an analogue/digital converter (10) for converting both said analogue signals A1 and A2 into two numerical values D1 and D2,—a controller (12) which receives both the numerical values D1 and D2 as input, and provides as output a single value equal to D1 if D1 is less than the end-of-scale value of the converter (10), or a value equal to (m/n)D2 if D1 is equal to the end-of-scale value of the converter.