| 摘要 |
1. Non-dispersive infrared gas analyser according to the two-beam principle, having a measuring and a comparison beam path, means for opposed cyclic interruption of the beam paths, a pneumatic receiver chamber (6, 7) respectively in each beam path, a first duct, connecting the receiver chambers, having a T-branch leading to a compensating volume (10), a pressure of flow sensor (12) arranged in the T-branch for the generation of an electrical measuring signal based on difference formation, characterized in that a second pressure or flow sensor (14) for the generation of a second signal proportional to the total intensity of the detected infrared radiation is arranged in a second duct (13) connected in parallel to the first duct (8). |
