Getting the Temperature from TC001

[ScottinTexas]

I am trying to get the temperature from a thermocouple and display it on my main window. It works perfectly on my computer. The temperature updates every two seconds as it is supposed to. I had previously posted a question about required DLLs for this to work on the lab computers which do not have NI software installed. I was told I needed to install the NIDaq Runtime engine. I installed that but still got the error:

"System.IO.FileLoadException: A procedure imported by 'NationalInstruments.DAQmx.dll' could not be loaded."

The stack trace takes it back to the constructor where I call the "Watch Temperature" method which does the following.

                try
                {
                    TempScanner = new Thermocouple();
                    TempWorker = new BackgroundWorker();
                    TempWorker.WorkerReportsProgress = true;
                    TempWorker.WorkerSupportsCancellation = true;

                    TempWorker.DoWork += (s, e) =>
                    {
                        TempScanner.TempWorker = TempWorker;
                        TempScanner.MonitorTemp(ref watchTemp);
                    };

                    TempWorker.ProgressChanged += (s, e) =>
                    {
                        var t = e.UserState as Temperature;
                        this.Temperature = t.Temp;
                    };

                    TempWorker.RunWorkerCompleted += (s, e) =>
                    {
                        TempWorker = null;
                        TempScanner = null;
                    };

                    TempWorker.RunWorkerAsync();
                }

The critical parts of the thermocouple class are shown below.

        public Thermocouple()
        {
            //These are the default values.
            SecondsDelay = 2;
            MinimumTemp = -70;
            MaximumTemp = 200;
            List<string> chnls = GetPhysicalChannels();

            PhysicalChannelName = chnls[0];
            string[] ary = chnls[0].Split('/');
            AssignedChannelName = ary[0];
            ThermocoupleType = AIThermocoupleType.J;
            tempChannel = tempTask.AIChannels.CreateThermocoupleChannel(
                        PhysicalChannelName, AssignedChannelName, MinimumTemp, MaximumTemp, ThermocoupleType, AITemperatureUnits.DegreesC);
            tempReader = new AnalogSingleChannelReader(tempTask.Stream);
        }

        public void MonitorTemp(ref bool watchTemp)
        {
            while (watchTemp)
            {
                if (!TempWorker.CancellationPending)
                {

                    Temperature t = new Temperature();
                    t.Temp = GetTemp();
                    TempWorker.ReportProgress(100, t);
                    t = null;
                    Thread.Sleep(milliseconds);
                }
                else
                {
                    tempReader = null;
                    tempChannel = null;
                    tempTask = null;
                }
            };
        }

The runtime engine I installed was NIDAQ1410f1Runtime.

As you can see it is not all that complex. There must be a simple solution to this problem.

Thank you

[NickelsAndDimes]

What version of the DAQmx do you have on the working computer? It sounds like the development computer has a version newer than 14.1, and you just need a newer version of the runtime.

If it turns out to be a version conflict, you can download the latest version of the runtime here:

NI-DAQmx Runtime 17.1.0
http://www.ni.com/download/ni-daqmx-run-time-engine-17.1/6838/en/