| 摘要 |
PROBLEM TO BE SOLVED: To improve countermeasures to a Karman's vortex and an abrasion resistance and correctly and speedily measure a temperature of a multilayer fluid, by arranging to a side face of a thermometer a protecting pipe which has a leading end part opened and an external side formed of an abrasion- resistant material, and filling a filler between the thermometer and the protecting pipe. SOLUTION: A thermometer 1 is constructed to be inserted into a protecting pipe 2 which has a leading end part opened to a fluid to be measured. A temperature measurement part is present at a leading end part of the thermometer 1, which is preferably nearly at the same position as an opening part 3 of the protecting pipe 2. A gap between the protecting pipe 2 and thermometer 1 is better to be narrow so long as the thermometer can be inserted and separated. Invasion of a foreign matter to the gap and vibration of the thermometer can be prevented by filling a filler between the thermometer 1 and protecting pipe 2. An outer side of the protecting pipe 2 is preferably formed of an abrasion- resistant material. Other than a normal fluid, the fluid to be measured can be a boiling bed, a fluid bed, a multiphase fluid with vibrating powders or particles.
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