| 摘要 |
The sample channel (8) has two parallel main bores (80, 81) and parallel adjacent bores (82, 83). All penetrate the casing (2), their ends opening on opposite sides into the common chamber (84, 85) formed in the casing, and sealed by a cover (16, 17) from the exterior. The inlet and outlet openings (21, 22) are arranged in one cover (16, 17). One main bore (80, 81) connects directly to the inlet opening (21). The other (80, 81) connects to the measurement chamber (5, 6) through a branched bore (25, 26). A counter-current heat exchanger is connected in series with the apparatus; it comprises two parallel tubes of thermally conducting material, connected together for heat transfer. One tube is connected to the inlet, the other to the outlet of the measurement cell. The compensation side of the measurement cell is mirror-symmetrical with the sample side. A further variant based on the foregoing principles is described.
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