Campbell-scientific 237-L Leaf Wetness Sensor Instrukcja Użytkownika Pobierz pdf (Strona 9)

Model 237 Leaf Wetness Sensor

'Check if Leaf wetness is below 150 kOhms transition and count as time dry

If Rs_kohm < 150 AND Rs_kohm > 0 Then

ScanIntervalWet = ScanIntervalWet + 1

EndIf

'Calculate Time Fraction Wet at top of each hour

If IfTime (0,60,Min) Then 'Interval must match data table interval

TimeFractionWet = ScanIntervalWet / ScanIntervalSum

ScanIntervalWet = 0

ScanIntervalSum = 0

EndIf

CallTable (Wetness)

NextScan

EndProg

4.3 CR10(X) Programming Example

*Table 1 Program

01: 60 Execution Interval (seconds)

1: AC Half Bridge (P5)

1: 1 Reps

2: 13 25 mV Fast Range

3: 1 SE Channel

4: 1 Excite all reps w/Exchan 1

5: 2500 mV Excitation

6: 1 Loc [ Vs_Vx ]

7: 1 Multiplier

8: 0 Offset

2: Z=1/X (P42)

1: 1 X Loc [ Vs_Vx ]

2: 2 Z Loc [ Rs_kOhms ]

3: Z=X+F (P34)

1: 2 X Loc [ Rs_kOhms ]

2: -101 F

3: 2 Z Loc [ Rs_kOhms ]

4: If time is (P92)

1: 0 Minutes (Seconds --) into a

2: 60 Interval (same units as above)

3: 10 Set Output Flag High (Flag 0)

5: Real Time (P77)

1: 1220 Year,Day,Hour/Minute (midnight = 2400)

6: Sample (P70)

1: 1 Reps

2: 2 Loc [ Rs_kOhms ]

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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Campbell-scientific 237-L Leaf Wetness Sensor Instrukcja Użytkownika Strona 9