| 摘要 |
PCT No. PCT/DE91/00776 Sec. 371 Date Apr. 12, 1993 Sec. 102(e) Date Apr. 12, 1993 PCT Filed Oct. 2, 1991 PCT Pub. No. WO92/07247 PCT Pub. Date Apr. 30, 1992.Two gas-filled chambers (K1, K2) arranged one behind the other in the beam path, with frontal areas (F) transparent to the beam, are interconnected by a first line (L12) which contains a first pressure or flow rate sensor (SF1). A buffer space (P) is connected to one of the two chambers (K1) via a second line (L11) in which is arranged a second pressure or flow rate sensor (SF2). The output signals from both flow rate sensors (SF1, SF2) are taken via amplifiers (V1, V2) to a differentiator. The degree of amplification of at least one amplifier (V2) is tunable for equalizing. The field of application of the invention is in gas analyzers operating on the infrared absorption system.
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