Mass flow rate data acquisition in labview using NI DAQ USB-6346

[aj_as]

Hello,

I am very new to labview. I have an NI DAQ device USB-6346 which I want to use to acquire a set of data from my measuring instruments. Firstly, I am trying to acquire mass flow rate data from my Aalborg MFC in labview using the USB device. I have already configured the DAQ in NI-MAX and I am kinda stuck as to how to proceed now. The Aalborg controller already has some example projects which I intend to use but I am not sure how to link it to my hardware data acquisition device. Any help will be greatly appreciated. 

Regards.

[santo_13]

It looks like there are several versions from Aalborg. Sharing the exact model and link to documentation will help the forum members guide you better.

Next, what kind of signal does your MFC output? hopefully, it is some voltage equivalent of mass flow as 6346 can measure analog voltage directly.

Can you tell more about the "Aalborg controller already has some example projects which I intend to use"?

[aj_as]

Hi,

Kindly see below link to the Aalborg mass flow controller.

https://www.aalborg.com/index.php/main_page/product_overview/id_product_overview/87/?url=https://www...

About the example project, aalborg has a labview driver with example projects. Attached is the vi I am using. I am able to read the mass flow rate using this vi but what I am trying to do is to read from multiple instruments concurrently using the DAQ device. For starters, I am beginning with the mass flow controller. 

Thanks. 

[aj_as]

Additionally, I am attaching the manual for the Aalborg mass flow controller (DPC47)

[aj_as]

The Aalborg DPC47 MFC is a digital mass flow controller so it provides a digital signal.

[santo_13]

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@aj_as wrote:

The Aalborg DPC47 MFC is a digital mass flow controller so it provides a digital signal.

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Do you mean RS232 or RS485? then 6346 is of no use as it doesn't support communication protocol.

You can hook up MFC to the computer directly using a USB-232 or USB-485 cable and read the data using Modbus or VISA drivers in LabVIEW.