Calculating the exposure time of the plate

[printPlant]

on basysprint UV-Setter:
Plate size 370 x 450mm, 175LPI, 1500dpi, light time 11000ms

How the CtP calculate the exposure time of one plate that i mentioned the detail in above line.
please give the formula that i can calculate the exposure time manually and tells the customer. how much time required for the job.

[plgraphic]

Up to kind of ps plate. The ps plate have different coating chemical and make them use light time valuable. For me I have basysprint 731 and test light time by step to match with developer level until can perfect perform.