| Subject: | MAO/SMPS/S1 - Instrument maintenance |
| DataStreams: | maoaossmpstrhS1.a1, maoaossmpsS1.a1
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| Description: | A number of instrument maintenance tasks were performed. The flow rate of the system from
the impactor was tested. Inlet flow rates and nozzle pressures were examined on the CPC
3772. The accuracy of the classifier voltage and sheath flow rates were evaluated. A
HEPA filter zero test was performed. During an approximately 24 hour period, the voltage
cable was left unplugged from the classifier. |
| Suggestions: | The data during the periods specified should not be used. |
| Measurements: | maoaossmpstrhS1.a1: - Sample relative humidity(sample_rh)
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maoaossmpsS1.a1: - Total scan concentration over all bins(total_concentration)
- High voltage reading(high_voltage)
- Mode index(mode)
- Standard deviation of mean diameter of size distribution using geometric average(geometric_mean_std)
- Mean diameter of size distribution(mean)
- Median diameter of size distribution(median)
- Lower size limit(lower_size)
- Low voltage reading(low_voltage)
- Mean free path(mean_free_path)
- 50 percent cut-point diameter of the impactor(d50)
- Number size distribution (dN/dlogDp)(number_size_distribution)
- Bins for diameter midpoint measurements(diameter_midpoint)
- Mean diameter of size distribution using a geometric average(geometric_mean)
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