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SCB-68 Analog Measurement with no common ground signals

Hello. How can I measure voltage of each batteries which they are connected serial? I have 5 serial connected batteries and  I want to measure all of their voltages seperately. When we connect batteries to the inputs (AIx) and AI GND pins(different grounds on the board) we measure interesting values. I think AI GND pins are common? But I need isolated 5 different grounds. Would you like to give me any advices? Thanks in advance!

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What is the actual DAQ board you are using?  The SCB-68 is just a connector block.

 

But it sounds like you should just be using the Differential measurement type.  This usually means AI0 is the + side and AI8 is the -, and continues down from there.  But you need to make sure your DAQ board can actually do that and what the pairs are.


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Thank you so much! I solved the problem with Differential Input. 

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