Objective:
Measurement
of temperature using RTD and Thermocouple and perform the data logging using
LabVIEW and NI modules 9211 & 9217 respectively. Design the front panel as shown in the fig.
Apparatus
required:
- 3 wire RTD
- K type thermocouple
- NI 9211 TC module
- NI 9217 RTD module
- NI USB chassis 9178 with USB cable and power adapter.
Procedure:
- Connect the chassis 9178 to the PC with USB cable and give power to it through power adapter. Don’t switch ON the power.
- Connect the RTD and Thermocouple with their respective module as per the diagram shown below:
- Connect the modules in the chassis slot and switch ON the power to the chassis.
- Open the LabVIEW software and create a new VI. Bring the ‘DAQ Asst’ VI into the block diagram by right clicking over it go to Express------>Inputs-------->DAQ Asst.
- Select the proper DAQ NI 9211-----> Acquire Signals----->Analog------->Temperature--->TC0 (for Thermocouple) click on finish.
- A configuration window will be opened, select type of thermocouple as ‘K’ and click on OK button.
- Now the LabVIEW will configure the DAQ and Build it.
- Take another DAQ Asst for RTD in the VI. This time select the DAQ as NI9217 and Temperature as RTD.
- In the configuration window select ’3 wire RTD’ and click on OK button.
- The output data from both the DAQ are in degree Celsius temperature directly.
- Log temperature from both the DAQ in the following format:
Date
|
Time
|
RTD Temperature
|
Thermocouple
Temperature
|
Status
|
Note:
For the status give a high and low threshold limit of the temperature, within
that limit the temperature is ‘NORMAL’ otherwise ‘ABNORMAL’
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