Channel switching device of formation and capacity grading equipment parallel calibration tool

The utility model discloses a channel switching device of a formation and capacity grading equipment parallel calibration tool. The channel switching device comprises a main control module, a channel switching module and an electric physical quantity detection module, the channel switchers form an array in the form of rows and columns, the channel switchers can switch on-off states under signals given by the main control module, and the input ends of all the channel switchers are respectively connected with one path of output channel of the formation and capacity grading equipment; the electric physical quantity detection module comprises detection channels with the same row number as the channel switchers, and the output ends of the channel switchers located in the same row are connected into one detection channel of the electric physical quantity detection module at the same time. The utility model mainly solves the problems that the time and labor are wasted and the efficiency is low when each channel of t