| 摘要 |
<p>The device achieves continuous control over the dust quantity in dust-gas mixtures from industrial units and others, both in front of and after respective filter appliances. Neither the physical-chemical properties of the dust and those of the gas, nor the dynamic parameters of the dust-gas flow, nor a wide range of dust concentrations, exert any influence on the results of the measurement. - The method comprises measurement of the braking radiation originating from the dust particles during irradiation of the work volume using a beta-ray source provided with an appropriate collimator and detector. The transmitted beta rays are absorbed by a filter in front of the detector, and the signal so obtained is subsequently treated. The information output can be as necessary in digital form or a continuous record. (0/1) GBAB- GB2125541 B A method for the determination of the dust content of a flow of dust-containing gas, which method comprises - irradiating the flow of dust-containing gas with a collimated beam of beta radiation emanating from a beta-ray source having a collimator associated therewith, and measuring by means of a detector the intensity of braking radiation induced by the dust in the dust-containing gas whilst preventing the detector from receiving beta radiation directly from the beta-ray source.</p> |
