01-28-2014 05:01 AM
Hello!
I have a setup with 5 pressure meters with 4-20mA outputs and a common ground. I am using 500 ohm resistors to convert the signals to 2-10V -signals and I am then using a NI 6353 to measure these signals.
I read some tutorials previously linked here but I am still a bit confused abot how I should configure the DAQ Assistant. Should I use RSE or NRSE perhaps for reading these signals?
Thank you in advance.
01-28-2014 05:14 AM - edited 01-28-2014 05:15 AM
As a general rule - if your meters are battery powered or have isolated outputs then use RSE otherwise use differential.
01-28-2014 05:19 AM - edited 01-28-2014 05:20 AM
They are not battery powered but it isn't possible to use differential connection for all the measurements I am making with the NI 6353 since there are 12 signals to be measured in total. This is why I was thinking about using NRSE for these 5 pressure measurements since they all have a common ground. Would that make sense?
01-28-2014 06:26 AM
Since Differential isn't an option and all of these 5 meters have a common ground, wouldn't it be right to use NRSE?
01-28-2014 07:22 AM
I recommend this white paper from NI:Field Wiring and Noise Considerations for Analog Signals
01-29-2014 02:17 AM
02-17-2014 07:23 AM
Hi guys!
http://www.ni.com/pdf/manuals/370784d.pdf
From the user manual you can read at the page: 4-20 to the page 4-24. There are detailed instructions.
BR,
Make