Shall I use NRSE or RSE mode for reading the output voltage of my sensor?

[david79]

Hello,

I am using a  gaz sensor that needs a power supply of 24 V and has an output voltage  : 0 -> 10 V. I want to read this voltage with labview( and then convert it to PPMs ).

My problem : I don't know what kind of analog input connection I must use : RSE ou NRSE ? ( I suppose the DIFF mode isn't appriopriate here ) .

I think I should use the NRSE mode ( meaning connecting the V+ of the 0-10V signal to one of the ACH and the V- to  AISENSE )  ???

Any help would be really great,

Regards,

David     

PS : using Labview 7.1

[Meister]

Hi David,

It basically all boils down to if the signal source is grounded or floating? If grounded use DIFF for low voltages (0-2V) and NRSE for high (above 2V). If the signal is floating use RSE.

For more documentation see:

https://www.ni.com/en/shop/data-acquisition/measurement-fundamentals/analog-fundamentals/grounding-c...

Regards

Meister, NIDK