| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for measuring a temperature of the fluid in a piping, free from the well damage caused by the flow force vibration, and capable of dispensing with the maintenance, inspection or the like, and improving the reliability. SOLUTION: A steam generating device 1 and a main turbine 2 are connected by means of a steam piping 3, and a temperature detecting element 10 of a thermocouple or the like is mounted on a surface of the steam piping 3. The temperature detecting element 10 is connected to a temperature detector 11, and an output signal of the temperature detector 11 is input to a temperature correcting device 13. An output signal of the temperature correcting device 13 is input to a temperature monitoring device 14. The temperature correcting device 13 corrects a temperature of a piping surface on the basis of the correlation of a temperature of the piping surface and a temperature inside of the piping measured in advance, and the correlation of a saturated steam temperature determined on the basis of the steam pressure and the correlation of the steam pressure and the temperature inside of the piping measured in advance.
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