Isolated analog input measurment

[pachook]

Hello all,

I am using NI USB 6259 card. I would like to measaure some voltage up 5 V on a electronic device supplied with network. So the risk is that accidently on a ground signal I may have L line instead of N ( the grounds are common). Because it may destroy the card - there is my question here - is there a way to isolate the card and the device, but also be able to measure analog signals ? Maybe some additional devices or so?

Message Edited by pachook on 02-22-2010 04:31 PM

[Lukas_Bedajanek · Accepted solution]

Hello PacHOOK,

you should consider using one of our isolated bus-powered isolated USB M Series multifunction data acquisition (DAQ) module. Isolated data acquisition boards provide an isolated floating ground and removes ground loops. So you will protect your USB card from taking damage.

USB-6215 http://sine.ni.com/nips/cds/view/p/lang/en/nid/203091

USB-6216 http://sine.ni.com/nips/cds/view/p/lang/en/nid/204053

USB-6218 http://sine.ni.com/nips/cds/view/p/lang/en/nid/203092

Best Regards

Lukas Bedajanek

[pachook]

it seems it can eb some solution. Before final decision I will speak to hardware departments to see if anything can be done from their side.

Thanks for your support