
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048 Page D-28
5 Peak Wind Speed Alert Flag
6 Data Invalid Flag
E1 Process Error Code
Assumptions: This process creates 10-minute running array to store current wind speed
data.
The process stores the current wind speed in the 10-minute running array if the wind speed is not a bad
sensor value and is between the specified upper & lower limits. The 2-Minute Running Average Wind
Speed is a scalar wind speed average and is calculated from data stored in the 10-minute array. The 2-
Minute Peak Wind Speed is the maximum wind speed for the past 2 minutes. The 10-Minute Running
Wind Gust is calculated using the same algorithm as the FAA SAWS Wind Gust Process
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.
The Peak Wind Speed Alert Flag is set if the 2-minute peak wind speed is greater than 25 knots.
The Wind Gust Alert Flag is set if the 2-Minute Average Running Wind Speed is greater than 20 knots
and the current wind speed is 15 knots greater than the previous current wind speed.
If the percent of data received by the process is bad and is less than the acceptable Percent Good Data, the
Data Invalid Flag is set. If a BIT Flag Number is between 1 and 31, the specified bit will also be set in
the BIT.
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If the current wind speed is outside the specified upper & lower limits and the Input Out of Range Flag is
set to a value between 1 and 31, the specified bit will be set in the BIT.
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2.13. NWS Running Vector Average Wind Direction Process
Inputs: 4 Wind Direction
5 Average Wind Speed (Knots)
6 Minimum Wind Speed for Variability
7 Minimum Wind Direction for Variability
8 Percent Valid Data
9 Bit Flag Number (1 - 31)
Outputs: 1 2-Minute Running Avg. Vector Wind Direction
2 Variable Wind Direction Flag
3 Wind Difference
4 Data Invalid Flag
E1 Process Error Code
Assumptions: This process creates 2-minute running array to store current wind
direction data.
The 2-Minute Running Average Vector Wind Direction is calculated the same as in the Running Vector
Average Wind Process
346
.
The Variable Wind Direction Flag is calculated in the following manner:
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Refer to Category #2, Process #11.
344
Viewable from the BIT Process, refer to Category #3, Process #1.
345
Ibid.
346
Refer to Category #2, Process #2.
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