The present invention relates to an aerosol transfer device (A), which comprises a membrane (1), a vibrator configured to vibrate the fluid and to aerosolize the fluid by the membrane (1). And an aerosol generator for generating an aerosol with an aerosol transfer device. The aerosol transfer device (A) further comprises a fluid reservoir (2) for storing a fluid (3) to be aerosolized, the fluid reservoir (2) disposed in fluid communication with the membrane (1), a plurality of A controller (10) configured to sequentially operate the vibrator (7) at different vibration frequencies so as to detect at least one electrical parameter of the vibrator (7) for each of a plurality of different vibration frequencies. Sensor (13) configured in contact with the membrane (1) and / or the presence of fluid (3) in the fluid reservoir (2) based on the dependence of the detected value of at least one electrical parameter on the vibration frequency A detector (13a) configured to detect. The present invention further relates to a method of operating the aerosol transfer device (A), which is an aerosol generator for generating an aerosol in the aerosol transfer device, and vibrates the membrane (1) and the fluid. And an aerosol generator having a vibrator (7) configured to aerosolize a fluid with the membrane (1). The aerosol transfer device (A) further includes a fluid reservoir (2) for storing a fluid (3) for aerosolization, the fluid reservoir (2) disposed in fluid communication with the membrane (1). The method sequentially operates the vibrator (7) at a plurality of different vibration frequencies, detects at least one electrical parameter of the vibrator (7) for each of the plurality of different vibration frequencies, and Detecting the presence of the fluid (3) in contact with the membrane (1) and / or in the fluid reservoir (2) based on the dependence of the detected value of the at least one electrical parameter on the vibration frequency. [Selection] Figure 1本発明はエアロゾル移送装置（Ａ）に
