Embodiments of the present invention provide a method and device for transmitting signal. The instrument includes a pressurized gas connection for connection to a source of pressurized gas, a working piston adapted to be acted upon by a pressurized gas, an actuating element for actuating the instrument, and a regulating device coupled to the actuating element and to the working piston for regulating a feed force of the working piston. According to the invention, a stream of a carrier gas is generated in the nozzle and at least one fluid to be atomized is brought into contact with the carrier gas.