Automatic checking device for flow meter

The utility model discloses an automatic checking device for a flow meter. The device comprises standard meters, a checked meter, a fan, a frequency converter, a control cabinet and an industrial personal computer, wherein the standard meters are arranged on pipelines; the fan is communicated with the pipelines with the standard meters; the frequency converter is connected with the fan; the control cabinet is connected with the frequency converter, the standard meters and the checked meter; and the industrial personal computer is connected with the control cabinet. The device is simple in structure; checking operation is facilitated; the industrial personal computer is used for finishing the checking operation, so that the device is time-saving and labor-saving, and checking efficiency can be greatly improved on the premise of meeting the requirements of checking accuracy; and moreover, software integrates technologies such as fuzzy judgment, self-checking and self-error correction, and redundant processing, so that the intellectualization and reliability of a checking system are improved.