01-13-2020 05:46 AM
I am using the PXIe 8821 for the DAQ application to measure the temperature from thermocouples. The thermocouples (Analog inputs) are connected to an amplifier that sends 0-10v analog signals. I managed to read the corresponding voltage of each thermocouple using DAQmx pallet, But now I want to convert it into temperatures. I have a prescaled voltage-temp conversion table, but I don't know how can I insert/use this table in LabVIEW to scale those corresponding voltages. what tools can be used?
Solved! Go to Solution.
01-13-2020 05:53 AM
01-13-2020 08:42 AM
hi, thanks for your response.
I got the concept, but I am having a hard time applying it at LabVIEW.
can you give me an example, please?
Best wishes
Suhaib Al Sulaimani
01-13-2020 09:13 AM
Hi Suhaib,
Suhaib@961 wrote:
I got the concept, but I am having a hard time applying it at LabVIEW.
can you give me an example, please?
Sure I can:
You provide your LUT as an array of points (each point is a cluster of X and Y value). Then Interpolate1DArray interpolates between your points…
01-14-2020 07:08 AM
Thank you, it worked well.
I kept the array as a control so in the future calibration these prescaled values are editable.
01-14-2020 07:36 AM
Hi Suhaib,
Suhaib@961 wrote:I kept the array as a control so in the future calibration these prescaled values are editable.
I usually keep those values in a CSV file, editable using Excel or any similar sheet-based tool…
01-15-2020 03:20 AM
Hi,
I totally agree that the solution I made was not practical. Although I tried to include the CSV file I faced one problem.
The file produces 2D array and later in my program, I need to interpolate in order to get an accurate value for the thermocouple readings. can you give me an example if possible?
The image shows how I did it first using the constant Array cluster.
I hope my explanation is clear
Thanks in Advance
01-15-2020 04:44 AM