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PRESSURE MEASUREMENT, NAIF SHAHMI BIN SUKHAIMI(2018679698) - Coggle Diagram

- - - - Mechanism : 1. Gas conduction at high pressure
      - Gas transport at low pressure
      - End losses through the support structures
      - Thermal radiation
    - - The number of these ions is proportional to the gas molecule density multiplied by the electron current emitted from the filament
      - these ions pour into the collector to form an ion current
      - some electrons collide with a gas molecule to form a pair of an ion and an electron
      - molecule density is proportional to the pressure, the pressure is estimated by measuring the ion current
      - Mechanism : 1. Electrons emitted from the filament move several times in back-and-forth movements around the grid before finally entering the grid.
    - - Formula : P1V1 = P2V2
      - Mechanism : 1. Bulb of the gauge attached to the capillary.
      - By raising the reservoir, the gas is now compressed in the capillary till mercury rises to the zero mark in the side tube and capillary
      - Allowing a little process fluid to enter B
      - The mercury level in the gauge is lowered up by lowering the reservoir
    - - The momentum of the heated particles is not altered by the fixed heated plates while this momentum causes the deflection of cooler vanes which is noted by the mirror using a lens mechanism
      - Mechanism : 1. Two fixed heated plated are located opposite to these vanes
      - Low pressure gas comes into the vessel through the inlet hole
      - Formula : Pi= KF/[(Ts/Tm-1)^1/2]