Read two analog signal

Hello,

I am using Labview 2017 with a LattePanda, and my problem is that I can't read two analog signal.

I have to get the temperature and the luminosity, both sensor works fine alone but when I want to make them work together I have weird results. There is my example :

I have already test several way, and on this way I read the temperature one time and then I read the voltage of the light sensor

But the temp sensor vary very much and I don't understand why !

I hope you could help me ! and sorry for my bad english !