How to do Wet calibration of leveltrol?


#1

Remove the displacer from the torque arm.

Apply equivalent weight on the torque arm that is equal to the wt. of the displacer. Adjust zero % output.

For Span : V = πr2h

Loss in weight = Wt. of float - wt. of the float immersed in liquid

Loss in weight = [ wt. of float - Vol. x d ]

Span wt. = (wt. of float - Loss in wt.)
r = radius of the displacer.
h = ht. of displacer.

Apply equivalent wt. equal to the (Wt. of float - Loss in weight). Adjust Span to get 100 % out put.

To check linearity apply average of the two weights.