Campbell Scientific 4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Terminal Input Modules - Manual (Page 30)

4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Terminal Input Modules (TIM)
BeginProg 'Program begins here
GF(1) = 2.1 : GF(2) = 2.2 : GF(3) = 2.3 'Initialize gauge factors for Strain( )
LeadLength(1) = 1.25 ' load lead lengths (100s of feet)
LeadLength(2) = 1.50
LeadLength(3) = 2.00
LeadRper100ft
= 2.5 '24 gauge copper wire lead R is 0.025 ohms/ft
Gauge_R = 350 ' Load Strain gauge Resistance
For I = 1 To 3 ' Loop through calculate the adjusted gauge factors
Lead_R(I) = LeadLength(I) * LeadRper100ft
GF_Adjusted(I) = GF(I) * (Gauge_R/(Gauge_R + Lead_R(I)))
Next I
ZReps = 3 : ZIndex = 1 ‘initialize cal reps and index pointer
LoadFieldCal (True) ‘Load prior calibration factors
Scan (10,mSec,100,0) 'Scan once every 10 mSecs, non-burst
FieldCalStrain( 10,StrainMvperV(),ZReps,0,ZeromV_V(),ModeVar,0,ZIndex,1,0,Strain())
BrFull (StrainMvperV(),3,mV50,4,1,5,7,1,5000,True,True,70,100,1,0)
StrainCalc (Strain(),3,StrainMvperV(),ZeromV_V(),-1,GF(),0) 'Strain calculation
CallTable STRAIN
CallTable Calib
Next Scan 'Loop up for the next scan
SlowSequence 'Slow sequence Scan to perform temperature
Scan (1,Sec,0,0) ' compensation on DAQ
Calibrate 'Corrects ADC offset and gain
BiasComp 'Corrects ADC bias current
Next Scan
EndProg 'Program ends here
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