| 摘要 |
PROBLEM TO BE SOLVED: To provide a testpiece heating system whose wiring and structure are simple. SOLUTION: This heating system is provided with a board; two or more electric heaters arranged into a planar shape on the board; a constant-temperature block which has an upper surface and a lower surface and is heated by the heaters; two or more temperature sensors which are mounted on the board and detect temperatures of the constant-temperature block; and a heater control circuit which is mounted on the board, receives the outputs of the temperature sensors, and controls the outputs of the heaters. The constant-temperature block has in its upper surface, two or more sample tube insertion holes for inserting sample tubes, and its lower surface has recessions in which the heaters and the temperature sensors can be put. The constant-temperature block is put on the board with the heaters and the temperature sensors in the containable recessions. COPYRIGHT: (C)2004,JPO
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