Pressure Gauge

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The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform

Elena Kokoliou - One of the best experts on this subject based on the ideXlab platform.

D G Jack - One of the best experts on this subject based on the ideXlab platform.

  • Conventional Pressure balances as reference standards for Pressures in the range 10 Pa to 10 kPa
    Metrologia, 1999
    Co-Authors: Chris Sutton, Mark Fitzgerald, D G Jack
    Abstract:

    Two methods are presented for using conventional Pressure balances in the Pressure range 10 Pa to 10 kPa. Both these methods overcome the inability of a Pressure balance to generate directly Pressures below a limit determined by the mass of the floating element. The first method uses twin Pressure balances, with the desired low Pressure established above one Pressure balance in terms of a small added mass on the other Pressure balance. This method is shown to be capable of realizing low absolute Pressures with a standard uncertainty below 2 mPa + (9 × 10-6)p, when operating the Pressure balances at 100 kPa. The second method uses one Pressure balance in conjunction with a high-resolution Pressure Gauge. A calculable low Pressure is established above the Pressure balance either by reference to an added mass on the Pressure balance or by a change in the Pressure Gauge reading. A 100 kPa Pressure balance is used in combination with a commercial high-precision barometric Pressure Gauge, modified to improve the temperature control of its sensor. The standard uncertainty associated with this implementation is shown to be about 14 mPa + (9 × 10-6)p.

Chris Sutton - One of the best experts on this subject based on the ideXlab platform.

  • Conventional Pressure balances as reference standards for Pressures in the range 10 Pa to 10 kPa
    Metrologia, 1999
    Co-Authors: Chris Sutton, Mark Fitzgerald, D G Jack
    Abstract:

    Two methods are presented for using conventional Pressure balances in the Pressure range 10 Pa to 10 kPa. Both these methods overcome the inability of a Pressure balance to generate directly Pressures below a limit determined by the mass of the floating element. The first method uses twin Pressure balances, with the desired low Pressure established above one Pressure balance in terms of a small added mass on the other Pressure balance. This method is shown to be capable of realizing low absolute Pressures with a standard uncertainty below 2 mPa + (9 × 10-6)p, when operating the Pressure balances at 100 kPa. The second method uses one Pressure balance in conjunction with a high-resolution Pressure Gauge. A calculable low Pressure is established above the Pressure balance either by reference to an added mass on the Pressure balance or by a change in the Pressure Gauge reading. A 100 kPa Pressure balance is used in combination with a commercial high-precision barometric Pressure Gauge, modified to improve the temperature control of its sensor. The standard uncertainty associated with this implementation is shown to be about 14 mPa + (9 × 10-6)p.

Gary W Stupian - One of the best experts on this subject based on the ideXlab platform.

  • convenient optical Pressure Gauge for multimegabar Pressures calibrated to 300gpa
    Applied Physics Letters, 2005
    Co-Authors: Liling Sun, Arthur L Ruoff, Gary W Stupian
    Abstract:

    The accurate measurement of Pressure by a straightforward and inexpensive optical procedure has been needed in the multimegabar region since static Pressures over 216GPa, 361GPa, 420GPa and 560GPa were obtained in the diamond anvil cell. Here, a simple optical Pressure Gauge based on the Raman shift of the diamond at the center of a diamond tip at the diamond–sample interface is calibrated against a primary Gauge (Pt isotherm at 300K from shock data) to 300GPa, thus enabling researchers who do not have a synchrotron to conveniently measure Pressure with an optical scale from 50to300GPa.

Yoshiyuki Kaneda - One of the best experts on this subject based on the ideXlab platform.

  • Tsunami magnitudes determined from ocean-bottom Pressure Gauge data around Japan
    Geophysical Research Letters, 2004
    Co-Authors: Toshitaka Baba, Kenji Hirata, Yoshiyuki Kaneda
    Abstract:

    [1] We develop a method to calculate tsunami magnitude from ocean-bottom Pressure Gauge data around Japan. Direct application of Abe's equations to ocean-bottom Pressure Gauge data underestimates tsunami magnitudes by about an order of magnitude. This is because Abe's equations were derived only from tsunami amplitudes measured at coastal tide Gauges where tsunamis are amplified by the shoaling of waves and reflection at the coastline. For offshore bottom-Pressure records, we introduce correction factors to Abe's original equations to account for tsunami amplitudes measured in open oceans. The modified equations produce Pressure Gauge determined tsunami magnitudes close to those determined using coastal tide Gauges.