发明名称 |
METHOD AND INSTRUMENT FOR MEASURING GAS TEMPERATURE BY HETERODYNE INTERFERENCE METHOD |
摘要 |
PROBLEM TO BE SOLVED: To provide a method and instrument for measuring gas temperature by heterodyne interference method capable of contactlessly measuring variation of a gas temperature with high responsiveness and high precision. SOLUTION: Refractive index change of gas is calculated based on phase change of a beat frequency in a measuring part 20 using heterodyne interference method in which an acoustic optical element 12 for heterodyne is utilized to measure the gas temperature, a Gladstone-Dale constant is found based on a gas composition, and the gas temperature is measured based on a state equation of gas using pressure value of the gas.
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申请公布号 |
JP2002039870(A) |
申请公布日期 |
2002.02.06 |
申请号 |
JP20000219968 |
申请日期 |
2000.07.21 |
申请人 |
JAPAN SCIENCE & TECHNOLOGY CORP |
发明人 |
TOMITA EIJI;KAWAHARA NOBUYUKI |
分类号 |
G01K5/28;G01N21/45;(IPC1-7):G01K5/28 |
主分类号 |
G01K5/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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