Hello dear colleagues,

The purity of a vacuum can be quantified by its pressure, which is typically measured in units such as Torr, millibar, or pascal. Lower pressure signifies a higher degree of vacuum, or in other words, less gas molecules in the system, implying a higher purity.

Various devices are used to measure the vacuum level, including:

    Thermal Conductivity Gauges (Pirani Gauge): These are used for low to medium vacuum range. They work by measuring the thermal conductivity of the gas in the vacuum, which changes as the pressure changes.

    Ionization Gauges (Hot-cathode and Cold-cathode Gauges): These are used for high to ultra-high vacuum ranges. They work by ionizing gas in the vacuum and then measuring the ion current. The more ions, the higher the pressure, and vice versa.

    Mechanical Gauges (Bourdon Gauge): These are used for measuring pressure close to atmospheric pressure.

However, these measurements mainly give the total pressure in the vacuum, not necessarily the purity. If you need to know the specific composition of residual gases in your vacuum system, a residual gas analyzer (RGA) is typically used. The RGA ionizes the remaining gas particles in the vacuum and sorts them by mass, effectively providing a snapshot of the gas species present, and therefore the purity.

Remember, achieving ultra-high purity often requires special techniques like bake-out to remove water vapor and other contaminants from the vacuum system surfaces. It's also necessary to consider the materials used within the vacuum system, as some materials outgas more contaminants than others.

Below, you can find the items where we try to answer the most frequently asked questions from our users. Vacuum control technologies are advancing every day, and factors such as efficiency, environmental compatibility, and carbon footprint are becoming prominent.

Regarding Vacuum Sensors:

- What is a vacuum sensor and how does it work?

- What are the different types of vacuum sensors?

- What are the use cases for vacuum sensors?

- What are the advantages and disadvantages of vacuum sensors?

- How do I maintain and calibrate vacuum sensors?

- How can I check the efficiency of a vacuum sensor?

- What materials are typically used in vacuum sensors?

- What is the difference between a vacuum sensor and a pressure sensor?

- How long is the lifespan of vacuum sensors?

- What factors should I consider when choosing a vacuum sensor?

Regarding Vacuum Pumps:

- What is a vacuum pump and how does it work?

-  What are the different types of vacuum pumps?

- What are the use cases for vacuum pumps?

- How do I maintain and repair vacuum pumps?

- What are the advantages and disadvantages of vacuum pumps?

- What should I look for when choosing a vacuum pump?

- How do I measure the purity of vacuum created by a vacuum pump?

- What types of oil should I use for vacuum pumps?

- What is the difference between a vacuum pump and a pressure pump?

- How much energy does a vacuum pump consume?

Regarding Vacuum Technologies:

- What is vacuum technology and in what fields is it used?

- Why is vacuum technology important?

- What materials are used in vacuum technologies?

- What types of industries commonly use vacuum technologies?

- What are the latest innovations in vacuum technologies?

- What are the key differences between vacuum technology and atmospheric pressure technology?

- What types of safety measures are taken in vacuum technologies?

- How do you think vacuum technologies will evolve in the future?

- How sustainable are vacuum technologies for the environment?

- What is the energy efficiency of vacuum technologies?