▎ 摘　　要

NOVELTY - The utility model claims a graphene sensor, comprising a test tube, a film, a flocculent filler, an electrode, a power supply, current change detector, the test tube whose tail end is a metal connecting pipe, the middle part is a plastic tube, the upper end is a sealing plastic cover; the film is installed on the plastic pipe in the middle of the test tube, the flocculated filler is absorbed on the graphene, flocculent padding is filled the space between test tube sealed plastic pipe and the film, said electrode is two, the two electrodes are symmetrically set on the test tube. and electrode contact the stuffing with the flocculent, the anode and cathode of the power supply through the lead connected with the two electrode, the current change detector is installed on the circuit of the power supply, the current change detector is connected with the oscillograph through the signal wire, the film can be changed according to the requirement, so as to obtain corresponding measuring range. The utility model is simple structure, convenient use, good use effect and so on.