Gaseous switched systems in full -automatic laboratory

The utility model relates to a gaseous switched systems in full -automatic laboratory, gas piping including a plurality of gas cylinder gas outlets, its characterized in that: still including controller and pressure sensor, check valve, automatic switch -over valve, adjustment valve, all setting up the check valve on the gas piping of each gas cylinder gas outlet, gas piping is connected to the automatic switch -over valve jointly behind the check valve, is connected to the system gas outlet after the adjustment valve is connected on the road to the outlet duct of automatic switch -over valve, the last pressure sensor that installs of gas piping, and each pressure sensor's signal output part is connected to the controller, and the automatic switch -over valve is connected to the controller. The utility model discloses structural design scientific and reasonable realizes that the zero clearance of many bottles of gases is taken a breath, and assurance test's continuity and reliability improve test efficiency a