Campbell-scientific CR1000 Measurement and Control System Manuel d'utilisateur Page 160

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 588
  • Table des matières
  • DEPANNAGE
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 159
Section 7. Installation
160
4. When variable CalMode increments to 6, the deployment calibration is
complete. Calibrated multiplier is -0.08. Calibrated offset is 53.978.
5. To continue this example, simulate a two-stage, 7-day service calibration
wherein both multiplier and offset drift (output @ 30 l/s = 285 mV, output @
10 l/s = 522 mV).
a. Set variable SignalmV to 285. Set variable KnownFlow to 30.0.
b. Start the 7-day, service calibration by setting variable CalMode = 1.
c. When CalMode increments to 3, set variable SignalmV to 522. Set
variable KnownFlow to 10.
d. Resume the 7-day service calibration by setting variable CalMode = 4
6. When variable CalMode increments to 6, the 7-day, service calibration is
complete. Calibrated multiplier is -0.0842. Calibrated offset is 53.896.
CRBasicExample29. FieldCal()MultiplierandOffsetDemonstrationProgram
'Jumper VX1/EX1 to SE6(3L) to simulate a sensor
Public SignalmV 'Excitation mV output
Public KnownFlow 'Known water flow
Public CalMode 'Calibration trigger
Public Multiplier 'Sensitivity
Public Offset 'Offset (starts at zero, not changed)
Public WaterFlow 'Water flow
'Data Storage Output of Calibration Data stored whenever a calibration occurs
DataTable(CalHist,NewFieldCal,200)
SampleFieldCal
EndTable
BeginProg
Multiplier = 1
Offset = 0
LoadFieldCal(true) 'Load the CAL File, if possible
Scan(100,mSec,0,0)
'Simulate measurement by exciting channel VX1/EX1
ExciteV(Vx1,SignalmV,0)
'Make the calibrated measurement
VoltSE(WaterFlow,1,mV2500,6,1,0,250,Multiplier,Offset)
'Perform a calibration if CalMode = 1
FieldCal(2,WaterFlow,1,Multiplier,Offset,CalMode,KnownFlow,1,30)
'If there was a calibration, store it into a data table
CallTable(CalHist)
NextScan
EndProg
Vue de la page 159
1 2 ... 155 156 157 158 159 160 161 162 163 164 165 ... 587 588

Commentaires sur ces manuels

Pas de commentaire