Measuring method of vapor density |
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| 申请号 | JP4926682 | 申请日 | 1982-03-26 | 公开(公告)号 | JPS58166242A | 公开(公告)日 | 1983-10-01 |
| 申请人 | Yokogawa Hokushin Electric Corp; | 发明人 | MIKI MASATOSHI; | ||||
| 摘要 | PURPOSE:To measure accurately the vapor density from a constant specified by a temperature and a pressure, by memorizing the most suitable constant at each temperature as a function of the temperature from a vapor density list in a domain being capable of approximating the vapor density to a prescribed expression using the pressure for a subordinate variable. CONSTITUTION:A vapor piping 1, a vapor temperature detector 2 and a pressure detector 3 are provided and temperature indicators 4, 5 indicating the temperature by receiving an output of the detector 2 and a pressure indicator 6 indicating the pressure by receiving the pressure of the detector 3 are provided. Arithmetic units 7, 8 storing constants (a) and (b) as a function of the temperature and outputting each value in accordance with each output of the indicators 4, 5, are provided and indicators 9, 10 are those for indicating the constants (a) and (b). The value of y=ax+b is operated by an arithmetic unit 11 by receiving the outputs (a) and (b) of the units 7, 8 and an output (x) of the indicator 6 and a vapor density (y) in a domain of superheated steam is computed. Further, the saturated vapor density corresponding to the output of the indicator 6 is computed. | ||||||
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| 说明书全文 | |||||||
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