| 摘要 |
PROBLEM TO BE SOLVED: To achieve a laser type gas analyzer for improving measurement precision by preventing an effect of noise as much as possible.SOLUTION: The laser type gas analyzer includes: a light projection unit for applying laser beams into a measurement gas; and a light-receiving unit for measuring a concentration of the measurement gas from a change in a light quantity by absorption of the laser beams. The light receiving unit includes: a trigger signal generation unit for generating a digital trigger signal for instructing measurement start of the measurement gas; a light reception unit for receiving the laser beams through the measurement gas; and an operation unit for calculating the concentration of the measurement gas based on the output of the light receiving unit. The light projection unit includes: a laser emission unit for generating the laser beams; and a drive circuit that is provided closer to the laser emission unit and drives the laser emission unit by receiving the digital trigger signal transmitted from the light receiving unit via a cable. |
