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  1. Nov 9, 2014 · The Penning Ionization Gauge, also known as cold cathode gauge is used to measure vacuum. High voltage between the anode and the cathode causes gas discharge and the resulting ionic current...

    • Nov 9, 2014
    • 63.1K
    • Captain Corrosion
  2. Feb 14, 2019 · The Penning gauge is the style most often used in vacuum furnaces. Hot cathode ionization gauges can also be used and will be the subject of a future discussion. Ionization gauges are relatively accurate at high vacuum and are an indirect-acting type of gauge.

    • VAC AERO International
    • What is the purpose of the Penning ionization gauge?1
    • What is the purpose of the Penning ionization gauge?2
    • What is the purpose of the Penning ionization gauge?3
    • What is the purpose of the Penning ionization gauge?4
    • What is the purpose of the Penning ionization gauge?5
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  4. Penning Ionization Cold Cathode. The first refinement of the discharge tube resulted in the Penning ionization gauge (PIG). This utilized a magnetic field to lengthen the travel of electrons, thus increasing the probability of ionizing collisions and more stable discharge fields.

  5. Nov 17, 2015 · The Penning Ionization Gauge, also known as cold cathode gauge is used to measure the level of vacuum. High voltage between the anode and the cathode causes gas discharge and the resulting ionic current is measured with an ammeter. The measured amperes are then converted into pressure units such as Pascals or Torrs.

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    • Reasons for inaccuracies
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    Radiation (Example: IG close to photon absorber) Strong magnetic fields (shielding necessary) RF radiation (Example: RF cavity -> shield) Problem: IG measures density, not pressure Sealed-off chamber, cool it down.

    Ultrahigh vacuum gauges Calibration results often given by Error of reading correction factor e =

    Uncertainties due to calibration chain Uncertainties due to installation (or mistakes in installation) Uncertainties due to operation (surface layers, corrosion, dust, aging) Inaccuracies caused by gas mixture Uncertainties caused by the device itself Ultrahigh vacuum gauges

    Principle of ionization Overview of types of ionization gauges Crossed field gauges and emissive cathode gauges Effects in emissive cathode gauges Comparison between the types of ion gauges Problems in applications

  6. The practicability of using the cold-cathode glow discharge to measure gas pressure in the region below 10 −3 mbar was first realized by Penning 1, who used a strong magnetic field to increase the electron path length from cathode to anode, so raising the ionization to a measurable level.

  7. Our cold cathode gauges use the PENNING principle of cold cathode ionization. Their measuring range of 10 -2 to 10 -9 enables you to measure into the high vacuum region. To control the turning on of the gauge, it would be best combined with one of our THERMOVAC or CERAVAC gauges.

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