Campbell MMW-005 Instruction Manual page 10

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'CR1000 Series Datalogger
'Declare Public Variables
Public MMW005 As String * 20
Public NBytesReturned
Public MMW005Values (2) As Float
Alias MMW005Values (1) = Wind_Dir
Alias MMW005Values (2) = Wind_Speed
'Define Data Tables
' Note: These tables are examples only. Specific applications may require different outputs.
DataTable (Wnd2Min,True,-1)
DataInterval (0,2,Min,10)
'2 minute averages of WindDir and WindSpeed
WindVector (1,Wind_Speed,Wind_Dir,IEEE4,False,0,0,0)
FieldNames ("Mean_Horizontal_Wnd_Spd:,Unit_Vector_Mean_Wnd_Dir:,Standard_Deviation_Wnd_Dir")
EndTable
DataTable (Wnd10Min,True,-1)
DataInterval (0,10,Min,10)
'10 minute average of WindDir and WindSpeed
WindVector (1,Wind_Speed,Wind_Dir,IEEE4,False,0,0,0)
FieldNames ("Mean_Horizontal_Wnd_Spd:,Unit_Vector_Mean_Wnd_Dir:,Standard_Deviation_Wnd_Dir")
EndTable
DataTable (Wnd60Min,True,-1)
DataInterval (0,60,Min,10)
'Hourly Averages of Wind Speed and Direction
WindVector (1,Wind_Speed,Wind_Dir,IEEE4,False,0,0,0)
FieldNames ("Mean_Horizontal_Wnd_Spd:,Unit_Vector_Mean_Wnd_Dir:,Standard_Deviation_Wnd_Dir")
Maximum (1,Wind_Speed,FP2,False,True)
SampleMaxMin (1,Wind_Dir,FP2,False)
EndTable
'Main Program
BeginProg
SerialOpen (Com1,4800,0,0,10000)
Scan (5,Sec,0,0)
'Character 36 is $, and Character 13 is CR.
SerialInRecord (Com1,MMW005,36,0,13,NBytesReturned,01)
SplitStr (MMW005Values(),MMW005,"",2,0)
'Convert Wind Speed from m/s to km/hr
'*** Other Conversion Factors can be used as required ***
MMW005Values (2) = MMW005Values (2) * 3.6
'Call Output Tables
CallTable (Wnd2Min)
CallTable (Wnd10Min)
CallTable (Wnd60Min)
conversion from meters per second to kilometer per hour.
Refer to Table 2 for conversion factors for wind speed.
Table 2. Wind Speed Conversion Factors
Units
Kilometers per Hour
Knots
Miles per Hour
Feet per Second
MMW-005 Solid State Wind Sensor
Conversion Factor
3.6
1.944
2.237
3.281