Hello everyone,
I am currently doing my MSc in Chemistry where I in short words will observe pressure and temperature changes during a process. My faculty recently got Labview, with NI-USB 6341. I've managed to program a vi for logging pressure and temperature by using these forums and watching tutorials (great community!). The voltage signals from the pressure and temperature instruments are converted to bars and degrees Celsius, and are then stored with time.
A couple of questions:
1) The DAQ assistant has a sampling frequency of 1Hz, can I lower this? A process going two days generates approximately 180.000 datapoints for one variable. I think this is in excess. Do I do this in the DAQ assistant?
2) Is there a way to plot temperature vs time and pressure vs time as the process is going? So I can observe pressure drops or temperature drops in real-time? Can I also save these plots to the harddisk when the process is finished?
If there is a better solution to my vi, please let me know! Im very new to this, and there are no people with labview experience at my faculty.
Thank you!