In combination with the definition of the DT5*〖KG-*2〗* series acquisition program parameters, the connections of the data acquisition channels and sensors of the CAWS600 automatic weather stations are analyzed, and the deviation correction of the data acquired from the automatic weather stations are introduced, which includes the analysis of the quantitative relationship between parameters and observations and the adjustment methods of the parameters. The auxiliary correction parameters are added for each observation object, so to preserve the original nature of the calculation parameters. This correction method adjusts the calculation parameters of the acquisition program, and the adjusted program is uploaded to the data collector. Even if sensors are replaced or the collector is used in other automatic stations, the results of this channel deviation are still valid.