Device for measuring concentration of SF6 gas

The utility model provides a device for measuring SF6 gas concentration, which comprises a measuring cylinder, a cap and an insertion tube, one end of the measuring cylinder is sleeved with the cap, the other end of the measuring cylinder is inserted with the insertion tube, the side wall of the measuring cylinder is provided with an installation box, the center of the cap is inserted with a connecting rod, and the connecting rod is inserted with the insertion tube. The two ends of the connecting rod are connected with a handle and a piston respectively, a stand column is inserted into the top face of the mounting box, the upper end and the lower end of the stand column are connected with a button and a U-shaped plate respectively, the U-shaped plate is inserted into the inserting groove, a limiting block is placed in a limiting cavity of the mounting box, and a gas concentration detector is embedded in the upper middle portion of the limiting block. A magnetic sheet is installed on the bottom face of the lim