Vacuum Pump Capacity Calculation Xls [2021] -

$$t = \fracVS \cdot \ln\left(\fracP_1P_2\right)$$

Remember that a pump's speed is not linear. A pump rated for 100 at atmospheric pressure might only provide 20 at 1 Torr. 5. Summary vacuum pump capacity calculation xls

) : The restriction of airflow due to pipe length and diameter, which reduces the "real" speed at the chamber. vacuum pump capacity calculation xls

Convert to m³/h: ( 177 \times 3.6 = 637 \text m³/h ) vacuum pump capacity calculation xls

Program these cells using standard Excel functions to calculate the results instantly. Theoretical Pumping Speed (

Use VLOOKUP or INDEX(MATCH) to interpolate speed at your target pressure. Compare required speed (from Step 3) to available speed from any pump catalog.