Campbell Scientific BlackGlobe Temperature Sensor for Heat Stress - Manual (Page 22)

Appendix B. Edlog Programming Examples
6: If (X<=>F) (P89)
1: 5 X Loc [ AirRH ]
2: 4 <
3: 108 F
4: 30 Then Do
7: Z=F x 10^n (P30)
1: 100 F
2: 0 n, Exponent of 10
3: 5 Z Loc [ AirRH ]
8: End (P95)
9: End (P95)
;BlackGlobe temperature - °C
10: AC Half Bridge (P5)
1: 1
Reps
2: 23 25 mV 60 Hz Rejection Range
3: 3 SE Channel
4: 1 Excite all reps w/Exchan 1
5: 1000 mV Excitation
6: 3 Loc [ BGTemp_C ]
7: 200 Multiplier
8: 0 Offset
11: Polynomial (P55)
1: 1
Reps
2: 3 X Loc [ BGTemp_C ]
3: 3 F(X) Loc [ BGTemp_C ]
4: -26.97 C0
5: 69.635 C1
6: -40.66 C2
7: 16.573 C3
8: -3.455 C4
9: 0.301
C5
;Calculate saturated vapor pressure.
12: Saturation Vapor Pressure (P56)
1: 4
Temperature Loc [ AirTempC ]
2: 9 Loc [ SVP_kPa ]
;Calculate vapor pressure.
13: Z=X*Y (P36)
1: 9
X Loc [ SVP_kPa ]
2: 5 Y Loc [ AirRH ]
3: 10 Z Loc [ VP_kPa ]
14: Z=X*F (P37)
1: 10
X Loc [ VP_kPa ]
2: 0.01 F
3: 10 Z Loc [ VP_kPa ]
B-2