we have a closed Tank used for AIR compressor. I already installed Level transmitter on the middle of the TANK.

My question is: Can I calibrate the LT If I have the length of the tank?

question 2: the low impulse line should be empty or filled with liquid?

Last question is: I have the formula to calculate the ranges, but I want to confirm that, can you please help me if you have the formula?

The tank is used as AIR receiver from our AIR compressor, and we are using the LT to measure the water if there will be. S please help me to get this.

Thank you a lot in advance.