| 摘要 |
PROBLEM TO BE SOLVED: To reduce an error in implementing sum correction and improve performance of measurement of a heat release value of a natural gas.SOLUTION: A sample gas of the time when concentration of measured gas components becomes stabilized is set as a reference gas, the reference gas is mixed with a carrier gas to produce a reference analysis gas, and component reference gas concentration of this reference analysis gas at a first analysis and at a second analysis is measured (S101). The sample gas is mixed with the carrier gas to produce an analysis gas, and component concentration before sum correction of the analysis gas at the first analysis and at the second analysis is measured (S102). A correction coefficient is obtained from a sum of the component reference gas concentrations at the first analysis and at the second analysis, and a sum of the component concentrations before the sum correction at the first analysis and at the second analysis and, with the use of the obtained correction coefficient, the component concentrations in the sample gas before the sum correction at the first analysis and at the second analysis respectively are corrected and made into component concentrations after the sum correction (S103). |
