Patent Number: 
Section: claims

1. A device for centering a temperature measurement device inside a tube reactor that will be filled with catalyst, comprising a single inflatable bladder mechanically and fluidically attached to a centering ring. 2. The device of claim 1, wherein a pressurized gas conduit is located inside the centering ring and is fluidically attached to a compressed gas source. 3. The device of claim 1, wherein the single inflatable bladder is configured to center the centering ring within a reactor tube when inflated. 4. A device for centering a temperature measurement device inside a tube reactor that will be filled with catalyst, comprising:a centering ring with an interior and an exterior, configured to accommodate a temperature measurement device and a pressurized gas conduit in the interior,a single inflatable bladder mechanically and fluidically attached to the exterior of the centering ring,the pressurized gas conduit fluidically attached to the centering ring such that a flow of pressurized gas exiting the pressurized gas conduit passes through a gas passage into the single inflatable bladder. 5. The device of claim 4, wherein the pressurized gas conduit is fluidically attached to a compressed nitrogen source. 6. The device of claim 4, wherein the pressurized gas conduit is fluidically attached to a compressed air source. 7. The device of claim 4, wherein the single inflatable bladder is configured to center the centering ring within a reactor tube when inflated. 8. The device of claim 4, wherein the temperature measurement device comprises a distal end, and the distal end is attached to a distal end mesh disk.