Vacuum Equipment Selection Wizard

• PUMP-DOWN TIME:

  +

  –

  [hours]
  VOLUME OF EVACUATED VALUE:

  +

  –

  [m³]
  INITIAL SYSTEM PRESSURE:

  +

  –

  [ Pa kPa mm Hg mbar ]
  FINAL SYSTEM PRESSURE:

  +

  –

  [Pa]
  PERFORMANCE:

  0

  [m³/h]
  reset data

  Unit conversion | Online calculator
• PERFORMANCE:

  +

  –

  [m³/h]
  VOLUME OF EVACUATED VALUE:

  +

  –

  [m³]
  INITIAL SYSTEM PRESSURE:

  +

  –

  [ Pa kPa mm Hg mbar ]
  FINAL SYSTEM PRESSURE:

  +

  –

  [Pa]
  PUMP-DOWN TIME:

  0

  [hours]
  reset data

  Unit conversion | Online calculator
• PERFORMANCE:

  +

  –

  [m³/h]
  PUMP-DOWN TIME:

  +

  –

  [hours]
  INITIAL SYSTEM PRESSURE:

  +

  –

  [ Pa kPa mm Hg mbar ]
  FINAL SYSTEM PRESSURE:

  +

  –

  [Pa]
  VOLUME OF EVACUATED VALUE:

  0

  [m³]
  reset data

  Unit conversion | Online calculator

Vacuum Pump Capacity, Pump-Down Time, and Chamber Volume Calculator

Our online calculator is designed to estimate vacuum pump capacity, pump-down time, and vacuum chamber volume. The calculations are approximate and do not take into account system leaks, conductance losses, outgassing, or other process-specific parameters. Nevertheless, this calculator provides a reliable preliminary estimate of the required vacuum pump performance, making the initial selection of vacuum equipment faster and easier.

ЕPump-Down Time vs. Pump Capacity If pump-down time is not a critical factor for your process, you can allow a longer evacuation time and select a vacuum pump with lower pumping speed, resulting in significant cost savings.

Example 1
Pump-down time: 0.1 h
Chamber volume: 2 m³
Initial system pressure: 1000 mbar
Final system pressure: 200 mbar
Estimated required pumping speed: 32.2 m³/h

Example 2
Pump-down time: 0.0030 h
Chamber volume: 2 m³
Initial system pressure: 1000 mbar
Final system pressure: 200 mbar
Estimated required pumping speed: 1073 m³/h

➜ The price difference between a 32.2 m³/h vacuum pump and a 1073 m³/h vacuum pump can be several times higher.
➜ We therefore recommend carefully evaluating the required pump-down time before selecting your equipment..

How to Choose the Right Vacuum Pump for Your Application

Selecting the right vacuum pump for evacuating a vacuum chamber requires consideration of several key parameters. The most important question is determining the required pumping speed needed to reduce the pressure inside a chamber of a given volume to the desired vacuum level within the specified pump-down time. To ensure the correct selection of a vacuum pump for your application, contact our specialists. The experts at JSC "Vacuummash" are ready to perform the necessary calculations and recommend the optimum vacuum equipment tailored to your specific process requirements.

➜ CONTACT OUR SPECIALISTS for selecting vacuum equipment at the manufacturer’s price
➜ VACUUM EQUIPMENT CATALOG is available on the official VACMA.RU website

+7 (843) 278-35-27 kazan@vacma.ru JSC Vacuummash (Vacma) plant: 58 Tulskaya St., Kazan, 420054, Russian Federation