[PID controller]

I have this project file (which is attached), and I need to add a PID controller to it.

I'm not sure exactly how to have it in the ladder logic in order to achieve this. 

Am I close to getting it or way off?

Thanks for the help in advance

Heating, pump, TC, and shutoff working.vlp

[Flow meter linearization]

I'm not very familiar with Visilogic or programming to be honest, can I do this just by the math functions and then connecting it to the linearization function?

Thanks for your help

[Flow meter linearization]

I have 2 flow meters in a project they are model:FS-8800H 3.0-100.0 Liters per minuet 

I am using a v700 HMI with the a V200-18-E3XB snap in module

I'm having trouble linearizing the data so that it shows the correct value.

Any help would be much appreciated, and I can provide any additional information needed.