The analog input signal was came from temperature transmitter which had been transmitted data in to voltage (V).
The program created DAQ assistant and used mode 1 sample (On Demand) with no scale and obtained input through analog input channel “ai1”.
At first, the voltage that being display was stable because it had sensed the ambient temperature. Yet, after we used our finger touched at the sensor caused the voltage (V) changed rapidly.
Then we had changed the scale into Celsius unit by equation C = 100*V in scaling method.
Thus, the program would always display in Celsius unit.