How to do Wet calibration of leveltrol?

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.

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