| 摘要 |
PROBLEM TO BE SOLVED: To determine an appropriate purge period in a hydrogen flame ionization type exhaust gas analyzer and a system incorporating the analyzer.SOLUTION: A hydrogen flame ionization type exhaust gas analyzer includes: a collector electrode for capturing ions generated from exhaust gas by hydrogen flame; an acquisition circuit for acquiring ion current to be generated by capturing the ions by the collector electrode; and an abnormality determination part which determines an abnormality when difference between a first output value Sof the acquisition circuit when the ion current resulting from the exhaust gas does not flow to the collector electrode, and a second output value Sof the acquisition circuit when zero gas is introduced to the hydrogen flame is a predetermined value. |
