Dynamic flow controller detection device

A dynamic flow controller detection device comprises a main loop and a test loop. The main loop comprises a large-pipe-diameter pipeline, a water tank, a variable-frequency pump, a pressure stabilizing tank and an electromagnetic flowmeter, and the water tank, the variable-frequency pump, the pressure stabilizing tank and the electromagnetic flowmeter are sequentially connected through the large-pipe-diameter pipeline and connected back to the water tank to form a circulation loop. The test loop comprises a small-pipe-diameter pipeline, a standard flow meter, a detected flow meter, a measuringcup, an electronic scale, a first electromagnetic valve and a second electromagnetic valve; a water inlet of the standard flow meter is connected between the pressure stabilizing tank and the electromagnetic flow meter through a small-pipe-diameter pipeline, the small-pipe-diameter pipeline connected with a water outlet of the detected flow meter is divided into a first branch and a second branch, and the first electroma