Patent ID: 8096198

Claim:
An electronic metering apparatus for metering liquids with a drive ( 7 ) with an electric motor ( 8 ), at least one displacer device ( 9 , 10 ) with a displacer element ( 10 ), which is connected and/or connectable to the drive ( 7 ); exactly four electric keys ( 18 , 19 , 20 . 21 ) for changeover between different menus, for navigation in the menus, setting of parameters and controlling the dislocation of the displacer element ( 10 ), including an electric mode key ( 18 ) and an electric parameter key ( 19 ) for changeover between different menus, a pair of electric control keys ( 20 , 21 ), arranged next to each other controlling the navigation in the menus, setting of parameters and controlling the dislocation of the displacer element ( 10 ), wherein the two control keys ( 20 , 21 ) control the navigation in the menus, the setting of parameters and the dislocation of the displacer element ( 10 ) in different directions, an electronic display device ( 16 ) for displaying menus and parameters, an electric control unit ( 22 ), which is connected to the electric motor ( 8 ), the electric mode key ( 18 ), the electric parameter key ( 19 ), the electric control keys ( 20 , 21 ) and the electric display device ( 16 ) and which controls the display of menus and parameters by the display device ( 16 ) as well as the dislocation of the displacer element ( 10 ) corresponding to the actuation of the mode key ( 18 ), the parameter key ( 19 ) and the control keys ( 20 , 21 ), and an electric power supply ( 23 ).