How to measure current

Hi:
We have a DAQmx (6024E) and we want to measure the current from a
flowmeter. When I tried to use the example program of LabView, I found
that the measured current is much different from the current we got from a voltagemeter directly.
Please help me to figure out HOW TO MEASURE CURRENT with NIDAQmx and LabView. Thanks
Message Edited by kuroshio on 07-11-2005 10:49 AM
Message Edited by kuroshio on 07-11-2005 10:55 AM

Hello kuroshio,
Current measurements are really just a voltage measurement with V=I*R applied. Have you tried first measuring a voltage and comparing that to the voltage from your voltmeter? You could measure the voltage a couple of ways. I would suggest first using the Measurement & Automation Explorer (MAX) test panels. Make sure your signal is connected to the correct pins and choose differential as the terminal configuration. Once you have a correct voltage measurement, then you can use a LabVIEW example from the example finder (Help>>Find Examples) to get started with a current measurement. In the example finder, you can navigate to Hardware Input and Output>>DAQmx>>Analog Measurements>>Current. There are a couple examples there for current measurements. You will have to enter the value of the resistor you are measuring the current through. Be sure to re-post if you still have problems
-Alan A.

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