Campbell Hausfeld SDM-CVO4 Manual Do Utilizador

If the SDM-CVO4 loses power for any reason, when power is restored the outputs 
will return to the default ‘off’ state. This will be held until the datalogger runs 
Instruction 103 again to update the output levels required. 

The following program examples are given to help you understand the general 
principles involved in the use of the SDM-CVO4. 

This program example is for a simple weather station with a CR23X Micrologger 
measuring wind speed, wind direction, temperature and solar radiation. Each 
parameter is scaled to the full-scale output range of the  
SDM-CVO4 which would be 0-10,000 mV DC or 0-20 mA, depending on the 
output jumper settings. Programming for the CR10X is very similar. 

; {CR23X} 
; Example weather station program to show scaling values  
; for the SDM-CVO4 
 
*Table 1 Program 
  01:  1 

Execution Interval (seconds) 

 
; Measure the output from a switch closure anemometer (A100R) 
 
1:  Pulse (P3)  
 1:  1 

Reps 

  2:  1 

Pulse Channel 1 

  3:  22 

Switch Closure, Output Hz 

  4:  1 

Loc [ WindSpeed ] 

  5:  1.25 

Mult ; Scale to m/s 

 6:  0.0 

Offset 

 
; Measure the wind direction from a potentiometer windvane 
 
2:  Excite-Delay (SE) (P4) 
 1:  1 

Reps 

  2:  14 

1000 mV, Fast Range 

 3:  1 

SE 

Channel 

  4:  1 

Excite all reps w/Exchan 1 

  5:  1 

Delay (units 0.01 sec) 

 6:  1000 

mV 

Excitation 

  7:  2 

Loc [ WindDir   ] 

  8:  0.357 

Mult ; Scale to angle in degrees 

 9:  0.0 

Offset 

 
; Measure air temperature from a 107 probe 
 
3:  Temp (107) (P11) 
 1:  1 

Reps 

 2:  2 

SE 

Channel 

  3:  31 

Excite all reps w/E1, 50Hz, 10ms delay 

  4:  3 

Loc [ AirT      ] 

  5:  1.0 

Mult ; Scale to degrees C 

 6:  0.0 

Offset 

 
; Measure solar radiation from an SP-Lite