| 摘要 |
PROBLEM TO BE SOLVED: To obtain a channel in which a plurality of thermocouples can be attached in a prescribed insertion depth easily and surely on the side of a thin- diameter and long pipe for measurement and whose airtightness in their mounting parts can be ensured easily. SOLUTION: A thin-diameter and long pipe 60, for measurement, in which a molten body creeps to the inside is provided. In addition, a plurality of thermocouple mounting members 62 each of which forms a cylindrical structure having parallel flat faces in the outer circumferential part and which are fixed and bonded to respective thermocouple mounting positions on the outer circumference of the pipe for measurement are provided. In addition, a plurality of thermocouples 68 are provided, Every through hole which is passed through every thermocuple mounting member from every flat face on one side in every thermocuple mounting member and through the pipe for measurement is formed. A thread working operation is executed to the inside of every through hole. By using every screw hole 64, every thermocouple sheath is attached airtightly by a compression fitting (a compression mounting metal fitting) 6.
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