To connect the circuit measuring the intensity of light with 5 level 1 watt LED bulbs to illuminate the phankradat filter, beam and use the photo diode is a light sensor. Output light intensity value is 5 levels and light levels over 5 mm LED lamp for checking the performance of the underlying instruments measuring black smoke, portable size. accounted for percent, in which high accuracy and therefore suggests that the black smoke, portable meter can measure levels of black smoke nearby. There is also a very fast over the use of the black smoke measuring system of filter paper black portable smoke meter can guide the development of efficient machines. Use the more versatile because have low production costs and easier to find, so it's a good template for developing, producing, black smoke in the next future.