What is a good averaging function to use?

[Process_Systems]

I must be getting old or something (Ha). I can't remember what your hardware hooked up to the 6024 was. You made reference to a load cell. I assume that you have signal conditioning ahead of the 6024. Also, what are you doing (if anything) with the other AI channels on the 6024. Any unused analog inputs should be tied to analog common on the terminal board. I notice that you have the chart Y-autoscaled, and it shows from 21 to 26. Are these numbers engineering units or what? What percentage of the maximum span of your analog sinal do these represent?
The VI itself looks ok at first glance. I am only asking a lot of questions, because I would like to have enough info to help.

Dave

[NewMachine]

I called omega and asked them if I have to have a fancy shmancy box for their load cell or if my setup will do. My setup is just that I am giving it 10Vdc input from a bread board that I had, and the two output leads connected to the terminal block, as differential channels. Anyway my point is that omega told me my setup was all I need, although that is not what I keep hearing. I had no idea about tying a common ground to the other open AI channels.... I will do that. The numbers on the graph are after some calculation was made and I converted the data into lbs which is more usefull than mV! So...please tell me if I am completley wrong with my setup without signal cond. except signal cond. in Labvie
w. Thanks!! have a good weekend....

[Process_Systems]

I'm not surprised you didn't get much satisfaction from Omega. I quit expecting any usefull assistance from their sales agents LONG ago. I think they were flogging used cars yesterday!
For a strain gauge/load cell measurement system, you need a VERY stable excitation dc power supply (no drift or ripple). Any drift/ripple/noise on this supply will show up dirctly superimposed on the input leads to the DAQ system.
Secondly, I assume that you have configured the 6024 to use the +/- 50 mv. range. You want all of the gain you can get directly on the DAQ board, if you are not using any isolation/gain ahead of the board. You should use as little "software gain" as possible. The ideal configur
ation is: Stable dc excitation power supply, isolated, low-drift pre-amplifier (like an Analog Devices 5B series module)mounted physically as close as possible to the strain gauge, shielded cable from the 5B module to the 6024E(mounted in a metalized enclosure, or a PC cabinet depending on the model). The common ground point should be at the input to the 6024 card. DO NOT ground the signal line at the load cell end. Depending on the isolation module used, you may benefit from grounding the negative side of the dc excitation to the load cell.
The above is a rough description of the systems that I am in the process of installing at a customer in Detroit.

Hope this helps somewhat.

Enjoy what's left of the weekend

Dave