The utility model discloses a long -range unmanned on duty liquid level volatile gaseous automatic checkout device, including kickboard and the gaseous room of gathering, gaseous collection room has been seted up and has been moved the door, the gaseous room upper portion of gathering is provided with the tractive device, the tractive device includes first gear and second gear and drive belt, connect an electronic jar on the drive belt, be provided with the fixed orifices in the kickboard, the vertical kickboard that runs through of fixed orifices, long -range unmanned on duty liquid level volatile gaseous automatic checkout device includes the stock, it is fixed that the stock can pass the bottom entry river bed of fixed orifices and stock, the stock upper end is fixed with the locating part, the external diameter of locating part is greater than the fixed orifices, it deviate from to make the kickboard can't follow the stock, be fixed with power and well accuse chip on kickboard or the gaseous collection room, the function of electronic jar is connected and controls to well accuse chip and electronic jar, its power supply is connected and is to the power with electronic jar and well accuse chip. The utility model has the advantages of can examined the water, detected the accuracy in the location.