GRIMM simultaneously measures the PM10, PM2.5, PM1 values every sixty seconds and displays them as mass in µg/m³.  The aerosol spectrometer has a resolution of the mass calculation of 1 µg/m³ with a flow rate of 72 liters/minute. The constant flow rate is maintained by a large external flow controlled pump. Sheath air assures cleaning of the optic which means extended periods of remote operation are assured.

Retrieved Parameters: Aerosol size spectra (range: 0.25-32 µm)