current

[tamureu]

Is there a cheap way of measuring current with LABVIEW?

[johnsold]

It depends...

How much current? Can you insert a shunt resistor in the circuit, preferably with one end grounded? What frequency or waveform does the current have? How do you define cheap?

Lynn

[Hooovahh]

Sure how does $36 sound?  If you have a spare COM port or a USB to serial adapter you can use these drivers and read down to the microamp level a few times a second.  Also does AC current, resistence VDC, VAC and a bunch of other features.

[tamureu]

How would I be able to get the multimeter to output the current with a labVIEW program and a USB-6211?

[johnsold]

You need an RS-232 port in place of the USB-6211.

Lynn

[Hooovahh]

Since when does using a 6211 become a requirement?  That seems like important information that should have been mentioned in the first post.

[tamureu]

https://forums.ni.com/t5/Example-Code/Measure-Current-Using-NI-myDAQ/ta-p/3996490

Would the labVIEW program used in on this page work when using the rs232 cable and multimeter?

[Dennis_Knutson]

You obviously know nothing about LabVIEW, instruments, or DAQ devices. That link you posted has nothing to do with a serial connection to a meter. If, In fact, you actually have a 6211, use that with a shunt resistor. If you are saying you actually have a myDAQ, then use it.

[billko]

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@Dennis_Knutson wrote:
You obviously know nothing about LabVIEW, instruments, or DAQ devices. That link you posted has nothing to do with a serial connection to a meter. If, In fact, you actually have a 6211, use that with a shunt resistor. If you are saying you actually have a myDAQ, then use it.

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This is a dangerous, potentially costly combination.  Maybe the OP should find someone who knows what they are doing.  Do this wrong and things get blown up.

[crossrulz]

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@billko wrote:

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@Dennis_Knutson wrote:
You obviously know nothing about LabVIEW, instruments, or DAQ devices. That link you posted has nothing to do with a serial connection to a meter. If, In fact, you actually have a 6211, use that with a shunt resistor. If you are saying you actually have a myDAQ, then use it.

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This is a dangerous, potentially costly combination.  Maybe the OP should find someone who knows what they are doing.  Do this wrong and things get blown up.

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Nothing like using a high side current shunt on a 60V line to let the smoke out of your DAQ card.

Read this white paper: Measuring Current with an Analog Voltage Input