| 摘要 |
A device including a sampling circuit with a sampling probe (5), a gas analyser (21) and a pump (15) for feeding a gas mixture sample from the probe into the analyser, as well as a filter assembly (10) downstream from the probe. The pump (15) is located downstream from the filter assembly and the pump discharge side is connected via a connecting duct (19) to the analyser and via an escape duct (16) to an outlet. The gas mixture to be analysed is sampled through the filter assembly (10) at a high flow rate substantially higher than the flow rate to the analyser (21), and the remaining flow is removed without passing through the analyser. The device is useful for analysing dust-laden gases, particularly flue gases from electric steel plants. |
