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temperature, pressure and flowrate measurement

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  • 1. Copyright 2006 John Wiley & Sons, Inc. 2-
  • 2. Group #10
  • 3. To explain the methods of…
    • Temperature measurement
    • Pressure measurement
    • Flow rate measurement
    2-
  • 4. Temperature measurement
    • Resistance Temperature Devices (RTD) Resistive temperature devices capitalize on the fact that the electrical resistance of a material changes as its temperature changes.
    2-
  • 5.
    • These devices work on the principle that a fluid expands when it is exposed to increase in temperature.
    2- Fluid-Expansion Temperature Measurement Devices
  • 6. Pressure Measurement
    • Bourdon Tube
    • The Bourdon pressure gauge uses the principle that a flattened tube tends to change to a more circular cross-section when pressurized.
    Copyright 2006 John Wiley & Sons, Inc. 2-
  • 7.
    • Manometer
    • Pressure measuring devices using liquid columns in vertical or inclined tubes are called manometers. These devices use Pascal’s law as its working principle.
    2-
  • 8. Fluid Flow Measurement
    • Bucket-and-Stopwatch
    • Perhaps the simplest way to measure volumetric flow is to measure how long it takes to fill a known volume container.
    Copyright 2006 John Wiley & Sons, Inc. 2-
  • 9.
    • Orifice Plate
    • With an orifice plate, the fluid flow is measured through the difference in pressure from the upstream side to the downstream side of a partially obstructed pipe. The plate obstructing the flow offers a precisely measured obstruction that narrows the pipe and forces the flowing fluid to constrict
    Copyright 2006 John Wiley & Sons, Inc. 2-
  • 10. Copyright 2006 John Wiley & Sons, Inc. 2-