| 摘要 |
There is provided an in-furnace temperature measuring method that is capable of reducing the number of operation steps that are required for temperature measurement, and effectively applying a measurement result even if colors and finishing states of a circuit board and an electronic part are changed. First and second pseudo circuit boards ( 12 ) and ( 13 ) having the substantially same configuration and dimensions as those of a circuit board are inserted into a reflow furnace ( 11 ), the front and rear surface temperatures of the first and second pseudo circuit boards ( 12 ) and ( 13 ) and air temperatures around the first and second pseudo circuit boards ( 12 ) and ( 13 ) within the reflow furnace ( 11 ) are measured. The entire surface of a metal whose physical value is known is black-coated in the first pseudo circuit board ( 12 ), and the entire surface of a metal whose given physical value is known is mirror-finished in the second pseudo circuit board ( 13 ).
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