PM 10 & PM 2.5 (CAAQMS) - Vasthi Instruments
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The Vasthi PM 10 and PM 2.5 Particulate Matter Monitors work The Principle of Particulate Matter 10 Analyzer uses the technology: Ambient particulate matter, Beta-ray detector for measuring the concentration of Particulate matter whose aerodynamic equivalent diameter is smaller than 2.5/10 m on rolled filter tape The instrument adopts low-radiation C14 as the radioactive source. The emitted -ray passes through the filter membrane with contaminants and will be received by the detector. The detector [1] is composed of a photomultiplier tube (or Geiger detector), plastic scintillator, & counter.
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PM 10 & PM 2.5 (CAAQMS) - Vasthi Instruments
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