Campbell SAT ARGOS Manual de usuario Pagina 333

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ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048 Page D-29
1. Two running averages are calculated--all the winds to the "left" and "right" of the current 2-Minute
Running Average Vector Wind Direction are averaged.
2. The Wind Difference is the difference between the "left" and "right" wind direction averages.
3. If the Wind Difference is greater than the Minimum Wind Direction for Variability and the Current
Average Wind Speed is greater than the Minimum Wind Speed for Variability, then the Variable
Wind Direction Flag is set to one. Otherwise, it is set to zero.
2.14. FAA Running Wind Average Process
Inputs: 4 Wind Speed
5 Wind Direction
6 Switch Closure
7 Percent Valid Data
Outputs: 1 Running Average Scalar Wind Speed
2 Running Average Vector Independent Wind Direction
3 Data Invalid Flag
4 Data Index 1
5 Data Index 2
6 Data Index 3
7 Data Index 4
E1 Process error code
Assumptions: This process creates 2-minute running array to store current wind
direction data.
This process calculates four separate running wind averages simultaneously. Depending upon the value
of the third input (Switch Closure), one of the four running wind averages is supplied:
Switch
Closure
Outputted Running Wind
Average (Seconds)
0 15
1 30
2 60
3 120
The calculation of the running wind average data is similar to the Running Wind Vector Average
Process
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. However, only the running average scalar wind speed and no other values are calculated other
than running average independent wind direction.
3. ALARM PROCESSES CATEGORY
All alarm processes have at least one process output to indicate the status of the alarm. The process
output will have a value of 1 when an alarm has been triggered or a value of 0 when no alarm condition
exists. Some alarm processes can also change the electronic state of a digital output, depending upon the
status of the alarm. The digital output will be high when an alarm condition exists, or it will be low when
no alarm condition exists.
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Refer to Category #2, Process #1.
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