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  2. Proportional counter - Wikipedia

    en.wikipedia.org/wiki/Proportional_counter

    In a proportional counter the fill gas of the chamber is an inert gas which is ionized by incident radiation, and a quench gas to ensure each pulse discharge terminates; a common mixture is 90% argon, 10% methane, known as P-10. An ionizing particle entering the gas collides with an atom of the inert gas and ionizes it to produce an electron ...

  3. Argon - Wikipedia

    en.wikipedia.org/wiki/Argon

    Compressed argon gas is allowed to expand, to cool the seeker heads of some versions of the AIM-9 Sidewinder missile and other missiles that use cooled thermal seeker heads. The gas is stored at high pressure. [49] Argon-39, with a half-life of 269 years, has been used for a number of applications, primarily ice core and ground water dating.

  4. Gas meter - Wikipedia

    en.wikipedia.org/wiki/Gas_meter

    Gas meter. A gas meter is a specialized flow meter, used to measure the volume of fuel gases such as natural gas and liquefied petroleum gas. Gas meters are used at residential, commercial, and industrial buildings that consume fuel gas supplied by a gas utility. Gases are more difficult to measure than liquids, because measured volumes are ...

  5. Flow measurement - Wikipedia

    en.wikipedia.org/wiki/Flow_measurement

    Because they are used for domestic water measurement, piston meters, also known as rotary piston or semi-positive displacement meters, are the most common flow measurement devices in the UK and are used for almost all meter sizes up to and including 40 mm (1 + 1 ⁄ 2 in). The piston meter operates on the principle of a piston rotating within a ...

  6. Standard cubic foot - Wikipedia

    en.wikipedia.org/wiki/Standard_cubic_foot

    Yet other definitions are in use for industrial gas, [5] where, in the US, a standard cubic foot for industrial gas use is defined at 70 °F (21.1 °C) and 14.696 psia (101.325 kPa), while in Canada, a standard cubic meter for industrial gas use is defined at 15 °C (59 °F) and 101.325 kPa (14.696 psia).

  7. Geiger counter - Wikipedia

    en.wikipedia.org/wiki/Geiger_counter

    The Geiger–Müller tube is filled with an inert gas such as helium, neon, or argon at low pressure, to which a high voltage is applied. The tube briefly conducts electrical charge when high energy particles or gamma radiation make the gas conductive by ionization.

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