Campbell-scientific CS10-L and CS15-L Current Transformers Uživatelský manuál stáhnout pdf (Strana 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)

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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Campbell-scientific CS10-L and CS15-L Current Transformers Uživatelský manuál Strana 12