| 摘要 |
<p>The liquid-metering device has a droplet generator (2) with a reservoir (3) and, connected to the latter, a displacement space (6) which can be modified by an electromechanical transducer (5) and which has an outlet opening (7) and, upon excitation of the transducer (5), shoots a liquid droplet (8) from a cold area (10) into a heatable area (1) through or counter to a gas stream (9) generated by a gas source (27). To make the device suitable for automatic and quasi-continuous liquid metering in process analysis, a heatable evaporation chamber (12) is provided through which the liquid (11) to be metered flows via valves (14, 16), and, between the evaporation chamber (12) and the reservoir (3), a condensate chamber (20) is connected via further valves (18, 22). The condensate chamber (20) and the reservoir (3) are connected via additional valves (30, 32) and a pressure regulator (28) to the gas source (27).</p> |
