| 摘要 |
<p>PURPOSE: To make it possible to individually conform to thermal capacity by disposing an electrothermal resistor sunk in a measuring fluid and a temperature sensor for measuring a boiling point temperature in a flask, and controlling the capacity to a target temperature corresponding to each boiling point temperature. CONSTITUTION: A flask 2 has a thermal resistor 7 sunk in a measuring fluid 4, and thermal energy is supplied from a battery 8 to the resistor 7 via leads 9. Two measuring points are provided on the flask 2 to measure the temperature drop in the area of the container neck 3. Temperature sensors 10, 11 are provided at the points, and connected to a thermal controller 14 via signal transmission lines 12, 13. The controller 14 controls the capacity to be supplied to the resistor 7 so as to maintain the temperature difference between the two points at a predetermined scale value such as 1 deg.C.</p> |
