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Event details

Voyage: IN2019_V06       [details]
Subject: Totaliser interference and Cals
When: 2019-12-09 03:27:54 UTC

- entered into Elog/Everlog as 2019-12-09 03:27:54
Log: in2019_v06_Atmospherics
Equipment: FAS – Filter Aerosol Samplers
Position: Latitude: -12.3065 Longitude: 130.43583

- entered into Elog as 12 18.39 S, 130 26.15 E
Action: Observation
Note:With right hand side totaliser calibrated (between times of samples 14 and 15) and still turning valves and pumps off (MFC’s were still on but have been changed to turn off when not in use now) when samplers are not in use the totalisers are still slowly counting. Over around two days these values were 1092.7m3  814.5m3 and 699.4m3 during the down time in the last few samples. Talking to Ian and he thinks it could be electrical interference. The values are zeroed before sampling so not sure if this is an issue or not.  
Comments:

Note: With right hand side totaliser calibrated (between times of samples 14 and 15) and still turning valves and pumps off (MFC’s were still on but have been changed to turn off when not in use now) when samplers are not in use the totalisers are still slowly counting. Over around two days these values were 1092.7m3 814.5m3 and 699.4m3 during the down time in the last few samples. Talking to Ian and he thinks it could be electrical interference. The values are zeroed before sampling so not sure if this is an issue or not.

I’m still using the left hand side totaliser for the samples so they are consistent with the rest of the voyage and will calibrate the left one before packing up so the samples can be corrected. The difference between the left and the right last samples were 38615.9 (L) and 38816.7 (R/Calibrated)

For most of the samples I’ve taken I’ve been putting a “L” for left and a “R” for right anyway.

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