| 摘要 |
PURPOSE:To sample the accurate sample water quickly and continously, by turning over the valves of each mechanism of a pump, sample water and drainage and constituting so as to carry out sampling and draining of the sample at a constant water level in case of sampling the sample water. CONSTITUTION:A switching valve 2 of a pump mechanism A is turned over on a suction side and a vacuum pump 1 is operated. An electromagnetic valve for air purge 4, an air filter 5 and a leading switch 6, are operated in order to prevent water from flowing into the pump 1. A sampling bottle 8 is reduced pressure and sample water is passed through an inflow pipe 11 and is absorbed in the bottle 8 through a stop valve 10 by turning over a switching valve 13 to the side of a sampling pipe 14. A constant quantity of the sample water is drawn up to the bottle 8 by the action of a float valve 9 and at the same time, the sample water is discharged by turning over the valve 13 to a discharge pipe 15. The sample water is sampled after washing the bottle 8 and the pipe 14 repeating said operation for >=5 times. Hereby, the accurate sample water is sampled quickly and continuously. |
