AIChannelCollection.CreateThermistorVExChannel Method

public AIChannel CreateThermistorVExChannel(
	string physicalChannelName,
	string nameToAssignChannel,
	double minimumValue,
	double maximumValue,
	AITemperatureUnits units,
	AIResistanceConfiguration resistanceConfiguration,
	AIExcitationSource voltageExcitationSource,
	double voltageExcitationValue,
	double a,
	double b,
	double c,
	double r1
)

Public Function CreateThermistorVExChannel ( 
	physicalChannelName As String,
	nameToAssignChannel As String,
	minimumValue As Double,
	maximumValue As Double,
	units As AITemperatureUnits,
	resistanceConfiguration As AIResistanceConfiguration,
	voltageExcitationSource As AIExcitationSource,
	voltageExcitationValue As Double,
	a As Double,
	b As Double,
	c As Double,
	r1 As Double
) As AIChannel

Parameters

physicalChannelName

Type: SystemString
The names of one or more physical channels to use to create one or more local virtual channels.

nameToAssignChannel

Type: SystemString
One or more names to assign to the created local virtual channels. To use the physical channel name as the local virtual channel name, set this value to Empty.

minimumValue

Type: SystemDouble
The minimum value expected from the measurement, in units.

maximumValue

Type: SystemDouble
The maximum value expected from the measurement, in units.

units

Type: NationalInstruments.DAQmxAITemperatureUnits
The units to use to return the measurement.

resistanceConfiguration

Type: NationalInstruments.DAQmxAIResistanceConfiguration
The number of wires to use for resistive measurements.

voltageExcitationSource

Type: NationalInstruments.DAQmxAIExcitationSource
The source of excitation.

voltageExcitationValue

Type: SystemDouble
The amount of excitation in volts that the sensor requires. Refer to the sensor documentation to determine this value.

a

Type: SystemDouble
The A constant for the Steinhart-Hart thermistor equation. Consult the sensor documentation to determine the value for this constant.

b

Type: SystemDouble
The B constant for the Steinhart-Hart thermistor equation. Consult the sensor documentation to determine the value for this constant.

c

Type: SystemDouble
The C constant for the Steinhart-Hart thermistor equation. Consult the sensor documentation to determine the value for this constant.

r1

Type: SystemDouble
The value of the dropping resistor, in ohms.

Return Value

This method creates a local virtual channel for every physical channel name you specify. If you create multiple local virtual channels with one call to this method, you can specify a comma-delimited list of names for nameToAssignChannel. If you provide fewer local virtual channel names in nameToAssignChannel than you create, NI-DAQmx automatically assigns names to the local virtual channels.

If you do not provide a value for nameToAssignChannel, NI-DAQmx uses the physicalChannelName as the local virtual channel name. If you use nameToAssignChannel to create a name for the local virtual channel, you must use this name in other properties and methods.

The NI-DAQmx driver does not determine if the requested settings are possible until the task is verified. CreateThermistorVExChannel(String, String, Double, Double, AITemperatureUnits, AIResistanceConfiguration, AIExcitationSource, Double, Double, Double, Double, Double) does not throw an exception for parameter values that are not compatible with your hardware or other settings in your task. To determine if all of the settings for a Task are valid, you must verify the task by starting the task, either with Start or by reading from or writing to the task, or by calling Control(TaskAction) with Verify.

Reference