| 摘要 |
Gas filtration assembly particularly for air loaded with dust, comprising first and second filters placed in a filtration pipe with an inlet and an outlet for the gas. Between the first (57) and second (58) filters there is an intermediate chamber (61) designed to homogenise the gas between the filters. Gas filtration assembly as above, where the first filter has a cross section matching that of the pipe and fixed to the inlet, and the second filter is tubular with an open end and a closed end, narrower than the pipe and placed coaxially inside it fixed to the outlet. The intermediate chamber therefore includes an annular space inside the pipe and around the second filter. Psychrometric device for measuring the humidity of the gas containing such a filtration assembly placed at the inlet to the measuring area, or at the inlet for fresh air entering a chamber for mixing the fresh air with the gas to be measured.
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