Calculations

From the beginning, VacTran has never used proprietary formulas in performing its calculations. All equations are from published sources, so the user can manually check results with hand calculations. Calculated data is continuously dumped to a text window, which can be examined or saved at any time.

VacTran has been bench marked against numerous existing vacuum systems over many years and verified to be a valid modeling tool.

VacTran performs the following calculations:

Conductance vs pressure
Throughput vs pressure
Pump speed vs pressure
Delivered speed vs pressure
Delivered throughput vs pressure
Pump down time
Pump down time, no losses
Gas throughput vs time
Generate pump model
Compare conductances in station
Mean free path vs pressure

Compare conductance throughput Compare pump speeds in station
Compare pump throughput in station
Compare gas loads
Station conductance vs pressure
Station throughput vs pressure
Station pump speed vs pressure
Station pump throughput vs pressure
Station delivered speed vs pressure
Station delivered throughput vs pressure Gas load vs time