temperature, pressure and flowrate measurement

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temperature, pressure and flowrate measurement

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

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