public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double valueAIN = 0; //Analog Voltage Value
LJUD.CHANNEL tempChannel = 0; //Channel which the TC/LJTIA is on (AIN0).
// Variables to satisfy certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
double tcVolts = 0, cjTempK = 0, pTCTempK = 0;
LJUD.THERMOCOUPLETYPE tcType = LJUD.THERMOCOUPLETYPE.K;
//Set the temperature sensor to a k type thermocouple
//Possible Thermocouple types are:
//B = 6001
//E = 6002
//J = 6003
//K = 6004
//N = 6005
//R = 6006
//S = 6007
//T = 6008
//Offset calibration: The nominal voltage offset of the LJTick is
//0.4 volts. For improved accuracy, though, you should measure the
//overall system offset. We know that if the end of the TC is at the
//same temperature as the cold junction, the voltage should be zero.
//Put the end of the TC near the LJTIA to make sure they are at the same
//temperature, and note the voltage measured by FIO4. This is the actual
//offset that can be entered below.
double offsetVoltage = 0.4;
//Open the first found LabJack U6 via USB.
try
{
u6 = new U6(LJUD.CONNECTION.USB, "0", true); // Connection through USB
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Constantly acquire temperature readings until a key is pressed
bool keyPressed = false;
while (!keyPressed)
{
ioType = 0;
channel = 0;
tcVolts = 0;
cjTempK = 0;
pTCTempK = 0;
try
{
//Add analog input requests.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, (LJUD.CHANNEL)tempChannel, 0, 0, 0);
//Add request for internal temperature reading -- Internal temp sensor uses
//analog input channel 14.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, 14, 0, 0, 0);
//Execute all requests on the labjack u6.ljhandle.
LJUD.GoOne(u6.ljhandle);
//Get all the results. The first result should be the voltage reading of the
//temperature channel.
LJUD.GetFirstResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get the rest of the results. There should only be one more on the request
//queue.
bool finished = false;
while (!finished)
{
if (ioType == LJUD.IO.GET_AIN)
{
if (channel == tempChannel)
{
valueAIN = dblValue;
}
if (channel == (LJUD.CHANNEL) 14)
{
cjTempK = dblValue;
}
}
try { LJUD.GetNextResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
if (e.LJUDError == LJUD.LJUDERROR.NO_DATA_AVAILABLE)
{
finished = true;
}
else if (e.LJUDError > LJUD.LJUDERROR.MIN_GROUP_ERROR)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
//Display Voltage Reading
Console.Out.WriteLine("Analog {0:0}: {1:0.######}\n", (int)tempChannel, valueAIN);
//Display the internal temperature sensor reading. This example uses
//that value for cold junction compensation.
Console.Out.WriteLine("U6 internal sensor: {0:0.0} deg K\n", (double)cjTempK);
//To get the thermocouple voltage we subtract the offset from the AIN
//voltage and divide by the LJTIA gain.
tcVolts = (valueAIN - offsetVoltage) / 51;
//Convert TC voltage to temperature.
LJUD.TCVoltsToTemp(tcType, tcVolts, cjTempK, ref pTCTempK);
//Display Temperature
Console.Out.WriteLine("Thermocouple sensor: {0:0.0} deg K\n\n", pTCTempK);
Thread.Sleep(1500); // Short pause
keyPressed = Win32Interop._kbhit() != 0; // If a key was hit break out of the loop
}
}
public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double valueAIN = 0; //Analog Voltage Value
LJUD.CHANNEL tempChannel = 0; //Channel which the TC/LJTIA is on (AIN0).
double ainResolution = 0; //Configure resolution of the analog inputs (pass a non-zero value for quick sampling).
//See section 2.6 / 3.1 for more information.
double dblInternal = 0;
double range = (double)LJUD.RANGES.BIPP1V;
// Variables to satisfy certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
double tcVolts = 0, cjTempK = 0, pTCTempK = 0;
LJUD.THERMOCOUPLETYPE tcType = LJUD.THERMOCOUPLETYPE.K;
//Set the temperature sensor to a k type thermocouple
//Possible Thermocouple types are:
//B = 6001
//E = 6002
//J = 6003
//K = 6004
//N = 6005
//R = 6006
//S = 6007
//T = 6008
//Open the first found LabJack U6 via USB.
try
{
u6 = new U6(LJUD.CONNECTION.USB, "0", true); // Connection through USB
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
try
{
//Configure the desired resolution. See section 2.6 / 3.1 of the User's Guide
LJUD.eGet(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.AIN_RESOLUTION, ref ainResolution, 0);
// Set the range on the ananlog input channel to +/- 0.1 volts (x100 gain)
LJUD.eGet(u6.ljhandle, LJUD.IO.PUT_AIN_RANGE, channel, ref range, 0);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
Console.Out.WriteLine("Press any key to quit\n");
//Constantly acquire temperature readings until a key is pressed
bool keyPressed = false;
while (!keyPressed)
{
ioType = 0;
channel = 0;
tcVolts = 0;
cjTempK = 0;
pTCTempK = 0;
try
{
//Add analog input requests.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, (LJUD.CHANNEL)tempChannel, 0, 0, 0);
//Add request for internal temperature reading -- Internal temp sensor uses
//analog input channel 14.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, 14, 0, 0, 0);
//Execute all requests on the labjack u6.ljhandle.
LJUD.GoOne(u6.ljhandle);
//Get all the results. The first result should be the voltage reading of the
//temperature channel.
LJUD.GetFirstResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get the rest of the results. There should only be one more on the request
//queue.
bool finished = false;
while (!finished)
{
if (ioType == LJUD.IO.GET_AIN)
{
if (channel == tempChannel)
{
tcVolts = dblValue;
}
if (channel == (LJUD.CHANNEL) 14)
{
dblInternal = dblValue;
}
}
try { LJUD.GetNextResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
if (e.LJUDError == LJUD.LJUDERROR.NO_DATA_AVAILABLE)
{
finished = true;
}
else if (e.LJUDError > LJUD.LJUDERROR.MIN_GROUP_ERROR)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
//The cold junction is the screw-terminal block where the thermocouple
//is connected. As discussed in the U6 User's Guide, add 2.5 degrees C
//to the internal temp sensor reading. If using the CB37 rather than
//the built-in screw terminals, just add 1.0 degrees C.
cjTempK = dblInternal + 2.5;
//Display Voltage Reading
Console.Out.WriteLine("Analog {0:0}: {1:0.######}\n", (int)tempChannel, valueAIN);
//Display the internal temperature sensor reading. This example uses
//that value for cold junction compensation.
Console.Out.WriteLine("U6 internal sensor: {0:0.0} deg K\n", (double)dblInternal);
//Convert TC voltage to temperature.
LJUD.TCVoltsToTemp(tcType, tcVolts, cjTempK, ref pTCTempK);
//Display Temperature
Console.Out.WriteLine("Thermocouple sensor: {0:0.0} deg K\n\n", pTCTempK);
Thread.Sleep(1500); // Short pause
keyPressed = Win32Interop._kbhit() != 0; // If a key was hit break out of the loop
}
}