A REAL-TIME MONITOR FOR PARTICULATE MATTER SUSPENDED IN THE AIR

摘要

The subject innovation relates to a real-time measuring device for suspended particulate matter in the air, and more particularly grain size by the number density and the mass of the collected by electrically charging the flowing particulate material was broken down by particle size measurement of each size to the total amount particles the air to measure the concentration in real time related to the real-time measuring device for suspended particulate matter.; Air real-time measurement device of suspended particulate matter in accordance with the present design is that the flow paths for flowing an air current flowing in from the outside is formed through the outer wall and, with the wire electrode set in the in the distribution, between the exit of the wire electrode and the distribution in the wire electrode to apply a high voltage for generating the corona discharge to the wire electrode so that the ion trap electrode provided on the above distribution, and single-pole ions are generated for charging the particulate matter contained in the air stream flowing along the said distribution connected and the charger is configured to include a voltage source connected to the ion trap electrode to apply a voltage to the ion trap and the electrode; Certain of the air flow in the particulate matter passes through the acceleration nozzle, wherein the acceleration nozzle is installed on the that the flow passage for flowing the inlet air current is formed through the outer wall and the air stream flowing along the said distributor to said distributor so as to accelerate to a predetermined velocity is connected in series to at least one of the impactor stage is electrically isolated configured including a collision board in a conductive material provided in the in the distributor respectively in front of the accelerated gas stream passes through the acceleration nozzles particulate matter more cutting diameter such that trapped collision and it is configured, so that the entrance of the flow passage of the first stage is connected to the outlet of the impactor and the flow of electricity and the impactor; Forming a shielded space to the exterior and electrically and is electrically isolated from the phase in the doerok stream is collected air flow in the particulate matter in the outer wall having the flow paths and flowing into the flow for the flow entering the distributor is installed on said distribution is configured to include a filter of the electrically conductive material, the end collector inlet is connected to the exit of the final impactor stage of the impactor with the distribution; The flow of the to the air stream containing the particulate matter to the inlet of the flow passage of the electrical flows and electric, were sequentially passed through the flow paths of each impactor stage of the impactor and the flow passage of the last collector of the flow of the final collector a vacuum pump connected to the outlet end of the collector to be discharged to the outlet, and; Current measuring instrument for electrically coupled to filter each of the collision plate and the end-collecting means of each of the impactor stages of the impactor to measure the current amount of particulate matter collected on each of the substrate and the impact filter; Receiving and current data from the current measuring devices characterized in that it comprises a computer for calculating the concentration of particulate matter.