Campbell SAT ARGOS Bedienungsanleitung Seite 331

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Seitenansicht 330
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048 Page D-27
The following variables are used by this process:
Variable Description
WS
avg
Average Wind Speed
WS
cur
Current Wind Speed
WS
max
Maximum 10-Minute Wind Speed
WS
min
Minimum 10-Minute Wind Speed
G
prev
Previous Wind Gust
G
cur
Current Wind Gust
Current wind speed is fed into the 10-minute running array of current wind speeds. WS
max
and WS
min
are
determined from the 10-minute running array of current wind speeds.
Then the following calculations are performed to determine the wind gust. First, determine whether a
new wind gust is available:


max
max
minmax
5
10
9
WSG
then
WSWS
and
WSWS
and
WS
if
cur
avg
avg
If no new current gust is available, then determine whether a sustained gust is available:
max
max
0
3
WSG
then
G
and
WSWS
if
cur
prev
avg
If no new gust can be determined at all, then the current gust is zero.
2.12. NWS Running Average Wind Speed Process
Inputs: 4 Current Wind Speed (Knots)
5 Upper Wind Speed Limit (Knots)
6 Lower Wind Speed Limit (Knots)
7 Percent Valid Data
8 Bit Flag Number (1 - 31)
9 Input Out of Range Flag (1 - 31)
Outputs: 1 2-Minute Running Avg. Wind Speed
2 10-Minute Running Wind Gust
3 2-Minute Running Peak Wind Speed
4 Wind Gust Alert Flag
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