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gas pressure measurement

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  • Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …   Wikipedia

  • gas permeation unit — (GPU)    a CGS unit of gas permeance for membranes, contact lenses, and similar thin materials. Permeance is defined to be the gas flow rate through the material, per unit of area and per unit of pressure difference across the material. The unit… …   Dictionary of units of measurement

  • Pressure — This article is about pressure in the physical sciences. For other uses, see Pressure (disambiguation). Pressure as exerted by particle collisions inside a closed container …   Wikipedia

  • Pressure sensor — Digital air pressure sensor Compact digital barometric pressure sensor A pressure sensor measure …   Wikipedia

  • gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… …   Universalium

  • Gas-filled tube — See also: Gas discharge lamp A gas filled tube, also known as a discharge tube, is an arrangement of electrodes in a gas within an insulating, temperature resistant envelope. Although the envelope is typically glass, power tubes often use… …   Wikipedia

  • Pressure drop — For other uses, see Pressure Drop (disambiguation). Pressure drop is a term used to describe the decrease in pressure from one point in a pipe or tube to another point downstream. Pressure drop is the result of frictional forces on the fluid as… …   Wikipedia

  • Gas exchange — or respiration takes place at a respiratory surface a boundary between the external environment and the interior of the body. For unicellular organisms the respiratory surface is Fick s law we can predict that respiratory surfaces must have: *a… …   Wikipedia

  • Gas chromatography-mass spectrometry — (GC MS) is a method that combines the features of gas liquid chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC MS include drug detection, fire investigation, environmental analysis,… …   Wikipedia

  • Pressure-Correction Methods — refer to a class of methods used in computational fluid dynamics for solving the Navier Stokes equations normally for incompressible flows. Common Properties The equations solved in this approach arise from the implicit time integration of the… …   Wikipedia

  • Gas meter — A gas meter is used to measure the volume of fuel gases such as natural gas and propane. Gas meters are used at residential, commercial, and industrial buildings that consumes fuel gas supplied by a gas utility. Gases are more difficult to… …   Wikipedia

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