Campbell Scientific CS10-L and CS15-L Current Transformers - Manual (Page 12)

CS10-L and CS15-L Current Transformers
CallTable Test
NextScan
EndProg
CR200(X) Program for 50 Hz
' CR200(X) Series Datalogger
' Program name: CS15-LManual.cr2
' date: 4 Mar 2009
' program author: Brad Maxfield
Const Samples = 30
' 30 samples for 2 waves of 50 Hz.
'Const Samples = 25 ' 25 samples for 2 waves of 60 Hz.
Public Crnt_A
Public mV(Samples)
Dim Counter
'Define Data Tables
DataTable (Test,1,-1)
DataInterval
(0,1,min)
Average (1,Crnt_A,False)
Maximum (1,Crnt_A,False,0)
EndTable
'Main Program
BeginProg
Scan
(1,Sec)
ExciteV (Ex1,mV2500)
For Counter = 1 To Samples
VoltSe (mV(Counter),1,1,1.0,-1250)
Next
ExciteV
(Ex1,mV0)
RMSSpa (Crnt_A,(Samples-0),mV(1))
Crnt_A=Crnt_A*0.2 ' Multiplier for sensor
If Crnt_A<0.15 Then ' Eliminate noise below 0.15 amps.
Crnt_A = 0
EndIf
CallTable
Test
NextScan
EndProg
5.3 CR510, CR10X, CR23X Dataloggers
With these dataloggers, the best method for monitoring amperage is to make
millivolt burst measurements using Instruction 23 and then calculate RMS
using Instruction 82. For Instruction 23, the entry for parameter 4 needs to be
0001. This triggers on the first channel, triggers immediately, stores data in
input locations, and makes single-ended measurements.
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