10-20-2011 04:15 AM
can we have any daq card with the range of 2V and 30mA.......please suggest me any card with the same specification....
10-20-2011 08:42 AM
What form factor? USB, PCI bus?
I can't think of a DAQ card with analog inputs that can't read 2V. However, reading 30mA is more problematic. Typically, reading current is done through an outboard signal conditioning device separate from the DAQ, and these are typically used for 0 to 20mA. Personally, I would investigate a simple I to V converter.
Be more specific about your needs.
10-20-2011 09:35 AM - edited 10-20-2011 09:36 AM
Agreed. You will probably need two DAQs since most multi-purpose cards are limited to 20mA. Is there any reason you can't use a sense resistor to convert your current signal to a voltage?
Also agreed that you're not being specific enough with your specifications for us to be more... specific.
Have a look here: http://www.ni.com/dataacquisition/
You can use NI web tools to compare all their products easily. Or, pick up the phone and call an NI Engineer (that's what they're there for).