The formulas for calculating transmitter URV and LRV are as follows:
HP Side or LRV or Transmitter 0% = X.S
LP Side or URV or Transmitter 100% = S(X+H)
S = Specific gravity of tank liquid or process liquid.
H = Tank Height
X = Distance between transmitter and HP tapping point.
1. The Parameters H,X can be entered in any units like mmh20, inh20 but must be same