DAQ selection

[dhans]

I need to select a usb powered low  cost daq to read an analog voltage upto 24V DC. Any suggestions please. Thank you!

[TomMcQ]

Hi dhans,

Thanks for your query. There are many factors to take into account when selecting hardware. I would recommend calling your local NI office to discuss your application needs so we can work together to select the most suitable hardware for your application.

Best regards,

Tom

[dhans]

Thanks, Tom. 

I have read a document from NI in which they have given enough details to choose a correct hardware.

[aputman]

In my experience, anything low-cost and USB powered will only read +/- 10Vdc.  You will need some sort of signal conditioner to scale the voltage down to this range and then you can scale it back up in software. 

I don't know what your definition of low-cost is but I have used the USB-6212 in several applications and it works for what I am using it for.  There is a list of USB devices on this page. 

[dhans]

Thanks..Aputman.. I have found one compaq DAQ chassis and a DAQ card NI-9221 which can read an input voltage of -60V to +60V. 

NI-9221 - https://www.ni.com/docs/en-US/bundle/ni-9221-specs/page/specs.html

C-DAQ - https://www.ni.com/docs/en-US/bundle/cdaq-9171-specs/page/specs.html