| 摘要 |
<p>The invention relates to a sampling unit (100; 300; 400; 500; 610; 620; 630) for a liquid sample. The sampling unit is adapted to be fitted into a system with temperature variations, which system contains or transports a liquid, and the sampling unit comprises a wall section (304; 404; 504'; 604) partly surrounding a cavity (301; 401; 501'; 601), which is liquid filled, a firs opening (303; 403; 503'; 603) through which the liquid in the cavity may flow out of the cavity, and a second opening (307; 407; 507'; 607) through which the liquid in the system may flow into the cavity (301; 401; 501 '; 601). The first opening is equipped with a first shutter element (305; 405; 505'; 605; 605'; 605"), which opens when the liquid's temperature in the cavity increases and is closed when the liquid's temperature in the cavity drops. The second opening is equipped with a second shutter element (309; 409; 509'; 609; 609'; 609"), which opens when the liquid's temperature in the cavity drops and a negative pressure is created in the cavity.</p> |
