DEVICE FOR MEASUREMENT OF AIR POLLUTION Russian patent published in 2000 - IPC

FIELD: ecology, applicable for monitoring of environment, in particular, continuous monitoring of the level of deleterious impurities (dust, smoke, mist) in the air. SUBSTANCE: the device, having charging chamber 4 with electrodes (6,7) and high-voltage source 10 located inside it, additionally uses pump (1), and second charging chamber (5) with two electrodes (8,9) located inside it and filter (2) for catching of impurities and mechanical diaphragm (3) installed between one charging chamber (5) and pump (1) and between the other charging chamber (4) and pump (1), respectively. Electrodes (6,7,8,9) of each chamber (4,5) are made in the form of gauzes, on of the electrodes (6,8) of each chamber (4,5) is connected to the common high-voltage source (10), and the other (7,9)- to one of the two respective electrical wave filter (11,12). One output of each electrical wave filters (11,12) is connected to the common reference voltage source (10), and the other output of each electrical wave filter (11,12) is connected to one of the inputs of the comparison and display unit via the respective peak detector (13,14). EFFECT: enhanced accuracy of measurement, reduced influence of weather conditions and composition of impurities on the results of measurement. 1 dwg