| 摘要 |
PURPOSE:To sample gases at averaged densities by discharging the sampled gas from the vessel of the other system while sampling a gas into a vessel of one system, sampling and discharging the gases alternately, and using part of the discharged gas for analysis. CONSTITUTION:The 1st, 2nd sampling vessels 5, 6 are moved therein with water at 15min intervals by means of a water pump 16, solenoid valves 7-10 and a timer so that sampling is accomplished alternately with the vessels 5, 6 from a process piping 1. The averaged and sampled gas stored for 15min is discharged into a sample drawing route 2 while one of the vessels 5, 6 is sampling the gas through a sampling pipe 4. Then, the sampling is executed continuously, and the averaged gas densities are obtained with less sampling. |
