| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a thermal analysis instrument capable of concentrically aligning a transparent furnace tube to a heating furnace and accurately fixing the furnace tube to the heating furnace at a time of attaching or detaching the furnace tube to or from the heating furnace.SOLUTION: A thermal analysis instrument 100 comprises: a transparent furnace tube 9; a sample holder 41 disposed in the furnace tube 9 and holding a sample container 51; a cylindrical heating furnace 3 surrounding the furnace tube 9 including at least the sample container 51 from outside; and gap jigs 8a and 8b restricting a radial gap between the heating furnace 3 and the furnace tube 9 to a predetermined value G. The heating furnace 3 includes a fixing portion 6 for fixing the furnace tube 9 to the heating furnace 3, the furnace tube 9 is detachable from the heating furnace 3, the furnace tube 9 includes an engagement portion 7a engageable with the fixing portion 6 with a radial position variable, the furnace tube 9 is inserted into the heating furnace 3, the gap jigs 8a and 8b are interposed between the heating furnace 3 and the furnace tube 9 to specify the gap to the value, and then the engagement portion 7a is engaged with the fixing portion 6 and the gap jigs 8a and 8b are detached.</p> |
