It worked. I also removed the -0.01 from the code (not that it makes a big difference, but your logic of a negative Kelvin reading being absurd makes sense).
I have to use another sensor (a flow meter. I am thinking POW110D3B) put it in the same circuitry. So the data would then have this temperature data, along with the flow rate data which has to be transmitted wireless and broken down in the receiver end. I hope it won't be too much trouble, in any case that it is, I know I can take guidance from you XD
Thanks for all the help, I really appreciate it.