NI-DAQmx: Continuous Current Measurement in LabVIEW
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Filename: contcurrentmeasurement.vi
Requirements: View
This example demonstrates how to continuously measure current using software timing.
Instructions:
1. Select the physical channel that corresponds to where your signal is input on the DAQ device.
2. Enter the minimum and maximum current ranges, in Amps.
Note: For better accuracy, try to match the input ranges to the expected current level of the measured signal.
3. Enter in the parameters of your current shunt resistor. The shunt resistor location will usually be "External" unless you are using an SCXI current input terminal block or SCC current input module. The shunt resistor value should correspond to the shunt resistor that you are using, and is specified in Ohms. If you are using an SCXI current input terminal block or SCC current input module, you must select "Internal" for the shunt resistor location.
Requirements
Filename: contcurrentmeasurement.vi
Software Requirements
Application Software: LabVIEW Full Development System 7.0
Language(s): LabVIEW
Hardware Requirements
Hardware Group: Multifunction DAQ (MIO)
Driver: NI-DAQmx 7.0
Reader Comments | Submit a comment »
current measurements
how can I graph the Short Circtuit
Current behavior over a period of time of
a PV cell. As you know, due to the nature
of PV cells the voltage remains
constant, therefore applying a shunt
resistor to measure the current will
result in a constant value depending on
the resistor. The short circuit current
value is obtained when the resistance is
zero. Do you know how this measyure
can be made. I'll appreciate any
comments regarding this issue, thanks.
- Marcelino Hernandez, ITESM . a00760930@itesm.mx - Apr 11, 2007
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