| | 1 | = GRIMM Sky OPC = |
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| | 3 | The GRIMM Sky OPC is an optical particle counting instrument. It works by combining a laser, mirror and detector to measure the scattering off particles. The laser is focused at the centre of the measuring cell, which is the channel where the particles travel through. |
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| | 5 | == Raw data format == |
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| | 7 | The data format is a comma separated (csv) file which contains the particle counts at the resolution set during collection. It also contains GPS position and time stamps for each measurement epoch. |
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| | 9 | == Specifications == |
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| | 11 | The instrument has 32 channels or "bins" of particle sizes, ranging from 0.25um up to 32um, and is capable of measuring up to 2 million particles per cubic litre. |
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| | 13 | The air is pumped into the instrument via an inlet nozzle. |
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| | 15 | It can be operated at different time resolutions ranging from 1 second to 60 minutes. |
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