How to measure the concentration of dust particles in a clean room?
The exhaust system is a very important part in the clean room. It can be beneficial to the clean treatment of the clean room and the discharge of exhaust gas, and to ensure that the clean room remains dust-free and clean. So, how to measure the concentration of dust particles in a clean room built by an enterprise in order to meet the production conditions? The dust particle counter of the clean room detection tool is an instrument used to measure the number and size of particles in the air, which can be used for the assessment of air cleanliness. It is widely used in medicine, electronics, machinery, color tube manufacturing, microorganisms and other industries to monitor the purification effect and cleanliness of workbenches, clean rooms, and purification workshops of various cleanliness levels to ensure pharmaceutical cleanroom products. the quality of. The basic principle of the dust particle counter is that the detection laser of the optical sensor is scattered by the dust particles and is received by the photosensitive element to generate a pulse signal. The pulse signal is output and amplified, and then digital signal processing is performed. By comparing with the standard particle signal, the comparison results are represented by different parameters. The common dust particle counter is light scattering type, and there is also a condensed core type laser dust particle counter, which can measure dust particles with smaller size.
The particle counter is a measuring instrument specified by the state, and its optical system and detection system will change after a period of use. If the light source is aging, the luminous efficiency is reduced or the focus is dislocated, the lens is polluted, so that the conversion sensitivity of the whole machine changes. Therefore, according to the requirements of JJF1190-2008 'Dust Particle Counter Calibration Specification', it is necessary to go to the Building Energy and Environmental Testing Center for regular calibration every year, and adjust all aspects of the instrument to obtain the ideal working state. How to measure the dust particle concentration in a clean room?
At the same time, as the recent research of PHARMA shows, the benefits of improved productivity and firm performance can make implementing basic management practices worth it.
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