| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature pressure combination measuring instrument in small size with high accuracy for measuring temperature and pressure of gas in the inside of a heat engine. SOLUTION: This measuring instrument is provided with a temperature sensor for measuring a temperature and a pressure sensor for measuring a pressure in the inside of a heat engine, the temperature sensor connects its one end to a temperature measurement device 21 provided outside the heat engine with the other end comprising a sheath pipe having an exposure part 23 exposing a thermocouple 22 inside the heat engine, the pressure sensor connects its one end to a pressure measurement device 25 provided outside the heat engine with the other end comprising a hollow pressure pipe 27 having an opening part 26 opened inside the heat engine, and the pressure pipe coaxially surrounds the sheath pipe 24 and is formed with a clearance between itself and the sheath pipe.
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