- 14: KRYPTON , Site none, Sun 02-Feb-1992 19:37:56 GMT, KRYPTON CALIBRATIONS:
KRYPTON CALIBRATIONS:
Below is calibration and A/D channel
assignments for the Krypton sensors.
sensor S/N calibration
q_h2o.ati.4m 1101 path = 1.006
Kw = -.118
Ln(V) = 8.055827
q_h2o.ati.10m 1133 path = 1.354
Kw = -.147
Ln(V) = 8.564874
NOTE: the calibration parameters are for the
dry vapor range.
A/D settings:
sensor channel gain/offset
q_h20.ati.4m 102 1/-
q_h20.ati.10m 103 1/-
- 30: KRYPTON , Site none, Tue 04-Feb-1992 18:26:46 GMT, KRYPTON at 4m:
KRYPTON at 4m:
The Krypton at 4m was disconnected
to see if it was the cause of spiking on
the 4m ati sonic. Unfortunately it was not
the cause of the spiking.
Time disconnected: ~18:00 GMT
Time connected: 18:27 GMT
- 58: KRYPTON , Site none, Sat 08-Feb-1992 16:21:10 GMT, 10m KRYPTON REMOVED:
10m KRYPTON REMOVED:
THe 10m krypton was removed this
morning in preparation to install the
10 m sonic.
- 107: KRYPTON , Site none, Wed 19-Feb-1992 00:17:43 GMT, Cleaned krypton hygrometer connectors a
Cleaned krypton hygrometer connectors at the boom -
disconnected them, blew moisture out, and
reconnected them.
Charlie first did this to the 4m sensor, and the
specific humidity reading came back on scale gradually
over about 30 minutes.
He then cleaned the 10m krypton connector and its
reading gradually came on scale.
- 108: KRYPTON , Site none, Wed 19-Feb-1992 00:32:55 GMT, q_h2o.ati.4m weirds out
looking at cockpit, I see a ghost in q_h2o.ati.4m
where the reading went very high (offscale - above
15), and then came back down to normal over the
course of about a minute. Operation looks normal right
now though.
- 111: KRYPTON , Site none, Wed 19-Feb-1992 19:22:58 GMT, Changed krypton hyg. calibration
Changed krypton hygrometer calibration function (q_kh20_2a.c)
so that it outputs 0. when the voltage was <=0. Previously,
it was only screening values < 0., before it took the log().
I believe this was the source of the "log SING" errors on
the aster console, and the -Inf's and NaN's in the covars.
The 0 voltages were being generated by the misperforming
hygrometers.
This necessitated shuting down and restarting the covars.
- 187: KRYPTON , Site none, Mon 09-Mar-1992 14:46:57 GMT, H2O at 4M:
H2O at 4M:
The windows were cleaned at 14:40Z.