- 202: Kryptons, Site lake, Thu 06-Mar-2003 15:08:56 MST, cleaned krypton
Just cleaned krypton too.
- 199: Kryptons, Site sage, Thu 06-Mar-2003 13:48:53 MST, krypton cleaned
While I was there, I cleaned the krypton as well at sage.
- 197: Kryptons, Site tower, Thu 06-Mar-2003 11:32:18 MST, cleaned krypton at 2m
Generally, the kryptons have looked okay, so I didn't think it was a high
priority to clean all of them -- especially since it is windy. This done
~09:30??
- 145: Kryptons, Site all stns, Wed 19-Feb-2003 12:07:08 MST, Kr cleaned
On 19 Feb .Between 11:00 and 11:30 all the tower Kr's were cleaned, starting
at the lowest and working to the uupermost.
Yesyerday, 18 Feb the Kr's at the outlying sites were all cleaned during the
radiometer cleaning visits, see logbook # 140
- 124: Kryptons, Site all stns, Tue 28-Jan-2003 14:54:04 MST, Kryptons cleaned
7/28/03 cleaned Sage, Lake
7/27/03 cleaned tower sensors.
Used alcohol with q-tip
NOTE: today SteveS mentioned kh2oV actually dropped on
20m unit after we cleaned it. We examined it and it
was OK. Re-cleaned with just a dry q-tip and after
looking at cockpit, it appears probably the best now.
I think the alcohol is a poor substitute for distilled
because it may leave a residue esp. if something comes
off the seal and/or qtip. Plane dry q-tip is better imho.
- 110: Kryptons, Site tower, Mon 13-Jan-2003 14:18:15 MST, krypton at 20 meters
On Jan 6 at noon, SteveO/Cody removed krypton 1392 at 20 meters
and replaced it with 1390.
The cal_file for kh2o.20m is
$ASTER/projects/FLOSSII/cal_files/krypton.20m
At first an incorrect V0 for 1390 was used, which resulted in negative
densities, which the calib function set to 0.
On jan 13 the correct V0 was entered in the cal file and
the data since Jan 6 rerun and plots remade.
kh2o.20m from 1390 looks good now, and does not have the diurnal
"light-leak" appearance of 1392.
- 87: Kryptons, Site tower, Tue 24-Dec-2002 22:25:47 MST, stopped krypton_heat script
The 2 meter krypton heater was turned on for much of last night
but is didn't have any effect - apparently it has burned out.
SteveO said it wasn't designed to be run for lengthy periods -
perhaps the resistor strip melted the hose.
I have stopped the krypton_heat script.
- 86: Kryptons, Site tower, Sun 22-Dec-2002 22:40:06 MST, krypton heater at 2m on tower
kh2oV at the 2 meter kryptons started falling at about 18:00 MST tonight,
Dec 22, showing the signature of a frost event.
The krypton_heat script worked correctly and turned on the heater
control line for 2 minutes starting at 19:35:15 MST. The voltage
kept dropping and so every 20 minutes it turned the heater on again.
However I can see no effect in the data - the voltage kept falling.
At 22:24:30 I turned it on manually, until 22:37:15 when the script
turned it off. No effect was seen in the data. 10 second averages
of kh2oV.2m stayed around 0.0035 V and didn't show any upward trend.
At 22:51:00 MST I turned it the heater line on again. The krypton
voltage is still bottomed out at 0.003 V.
At 23:00 MST I changed the script to leave the heater on until
the voltage goes above 0.05 V. Each level is checked every
5 minutes.
FYI: To create 10 second averages of kh2oV.2m
prep -r 0.1 -D kh2oV.2m
The history of heater control is saved in files on
$ASTER/projects/FLOSSII/cal_files/kh2oV.*
It is also written to syslog, and so it is in the isff logs.
Added, morning of Dec 23: It took 40 minutes to bring kh2oV from
.004 at 23:10 MST to .05 V at 23:50 last night.
- 64: Kryptons, Site tower, Mon 16-Dec-2002 17:46:35 MST, krypton heater added
We mounted the heater on the krypton at about 13:00. It was connected through
cosmos about 16:00 (Tony may elaborate). Thus, we should have some data on
this system tonight.
- 27: Kryptons, Site all stns, Thu 21-Nov-2002 10:04:49 MST, Krypton Placement
11/21/02
Krypton placement with respect to CSAT:
Horizontal orientation on all installations:
From center of CSAT array:
Stn2 (sage) 26cm back 20cm below
Stn3 (lake) 26cm back 20cm below
Tower:
2m 27cm
10m 24cm
20m 24cm
30m 24cm
- 11: Kryptons, Site all stns, Mon 11-Nov-2002 09:36:00 MST, Krypton Cals
krypton path V0 Kw
1101 2.6 -0.1270443 666.8774800
1389 2.6 -0.1457689 753.3314535
1391 2.6 -0.1414481 1078.4729713
1392 2.6 -0.1370274 502.1903044
1394 2.6 -0.1395649 1036.5063415
1395 2.6 -0.1418386 1262.7934824
1397 2.6 -0.134113 590.245198