Appendix B
Measuring Temperature with Resistive Transducers
©
National Instruments Corporation
B-5
SCXI-1581 User Manual
5.
Enter a channel name and click
Next
. You also can enter a channel
description.
6.
Select the type of RTD you have from the drop-down listbox and
click
Next
.
7.
Select the appropriate temperature unit from the drop-down listbox
and enter the measurement range. Click
Next
.
8.
Enter the nominal resistance value of the RTD and click
Next
.
9.
Select the E Series DAQ device to use, channel number, analog-input
mode, and excitation current source and value. Click
Finish
.
10. To test the Traditional NI-DAQ RTD virtual channel, click the
Test
button.
You have finished creating the traditional NI-DAQ virtual channel. You can
access the channel by expanding
Data Neighborhood»Traditional
NI-DAQ Virtual Channels
.
Creating an RTD Virtual Channel Using NI-DAQmx
To create an RTD virtual channel using traditional NI-DAQ, complete the
following steps:
1.
Launch MAX.
2.
Right-click
Data Neighborhood
and select
Create New
.
3.
Select
NI-DAQmx Channel
and click
Next
.
4.
Select
Analog Input»Temperature»RTD
and click
Next
.
5.
Select the E Series DAQ device channel to use and click
Next
.
6.
Enter a name for the virtual channel and click
Finish
.
7.
In the configuration screen that appears, select the input range, RTD
type, nominal resistance value, wire configuration, excitation source,
and excitation value.
8.
To test the NI-DAQmx RTD virtual channel, click the
Test
button.
You have finished creating the NI-DAQmx virtual channel. You can access
the channel by expanding
Data Neighborhood»NI-DAQmx Channels
.
Note
You can use the LabVIEW VI
Convert RTD Reading
to convert RTD voltage
measurements into temperature readings. This VI is located in the
Data Acquisition»
Signal Conditioning
function subpalette.