Does anyone have a PID class that I can use in Measurement Studio? Or would it be possible to use the labview module? I'm using c#. Thanks for your help.
As far as a National Instruments solution, your best bet is probably the PID ActiveX controls. This isn't a native .NET solution, but you can use the ActiveX controls in your C# project, through COM interop.
You could also search online to see if there are any implementations in the public domain. CodeProject.com is one site that has a good deal of .NET code.