LEO
76 posts
3130 Load cell temperature
We have started logging the 3130 load cell temperature in order to potentially perform temperature compensation for the thermal drifts.
East - 2/2/2020 ~3:50pm
Center & West - 2/11/2020 ~3:15pm
LEO Center seepage leak test
Due to a higher than normal seepage flowrate to the LEO center seepage leak position flowmeters (Novalynx and PE102), we investigated the cause of this increase.
From inspection, we had found that seepage drain positions -2 and -1 were clogged due to the coarse soil material. Flowrates returned to normal once they were unclogged.
*The seepage -2 and -1 were previously unclogged.see Center Seepage clog
With this new knowledge, we performed the following tests on 2/6/2020 to see how the clogging the different seepage sections would affect the center seepage leak.
- with -2 plugged from 9:50am to 10:33am
- with -1 plugged from 1:35pm to 2:20pm
We can clearly see that if either seepage divider sections are the flowrate of the seepage leak flowmeter increases. This seems to indicate that there is a larger or additional leak at a higher point of the polypropylene divider plates.
Center Seepage Clog
Unclogged the following locations on LEO Center
1/28/2019 -> -2
1/31/2019 -> -1
*Data shows -1 seepage flowrate was not affected by the clog whereas -2 seepage flowrate was affected.
PE102 and Novalynx maintenance.
West slope.
PE102:
- -4 - funnel was not directly under the drain. Repositioned.
- -2, 2 & 4 may need to be flushed/cleaned
- Reseated the questionable PE102 connectors
Novalynx:
- -2 - tipping bucket was stuck. Adjusted the screws holding the shaft so it moves freely.
Center slope:
Novalynx:
- -1 and leak - replaced bad proxy switches
- 2 - tipping bucket was caught on a screw that was along the side of the body.
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1 sec/min Data logging Performance Issue
There was a performance issue with the main dsc.b2 server with generating log files for 1 minute and 1 second log files.
Affected time range: 9/11/2019 8:10 PM to 9/16/2019 10:40AM
LEO CNR4 Center Bay West Sensor Re-purposed
The west most CNR4 Sensor (LEO-C_10_-2_0_CNR4) was removed from the Center Bay mast on Thursday August 8th between 8am and 10 am by Aaron Bugaj.
This sensor is temporary being used in the West bay for a remote sensing experiment.
LEO CSAT3
There is no LEO CSAT3 for the East or West bay installed due to damage/maintenance.
Data logging to the East and West bay have been stopped as of 7/25/2019 8:25am.
LEO Center Load 14_-3_0 cells 3130 channel swap
load cell 14_-3_0 signal channel was swapped to see if the noise was less prevalent in the other channel.
LI7000 missing data
LI7000 configuration was changed unknowingly, subsequently, we have a long time period of lost data.
Data since 2017-11-20 11:20:48.
The issue was rectified on 2019-03-13 22:23:05.
PE102-038 East Bay -2 Swap
The PE102-038 in East bay -2 position was measuring about 1/2 of expected counts. Flowmeter from the +4 position in East bay was swapped with -2 position until a replacement is available.
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