How to measure more than 10V DC voltage using NI 9205

[LuizFelipe]

Hello everyone,

I have a solar panel, controller, battery and load. I need to measure their voltages and currents.
The tensions are higher than 10V DC.
I need to use the NI 9205 to measure them? I do not know if a resistive divider will work?
Anyone have any suggestions?

thank you

[crossrulz]

In the past, we've used simple resistor dividers.  More recently, we added op-amps to the circuit so that the DAQ impedence didn't mess with our signals.  But the simple resistor dividers work just fine.

[LuizFelipe]

Thank-you for your response.

Other question. The resistence of this resistor divider should be high? To avoid current leaking?

Thank-you

[crossrulz]

We targeted for around 1M total resistance through the divider.  So a divide by 10 would have a 900k and a 100k.