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Experiment 2: Flow Measurement

Ken McFarland Pascal Matengo. Experiment 2: Flow Measurement. Lab Overview. Measure flow of water using three different flow meters Measure flow manually to obtain actual flow rate Use known flow rates and meter reading to construct calibration curves for each meter. Lab Purpose.

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Experiment 2: Flow Measurement

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  1. Ken McFarland Pascal Matengo Experiment 2: Flow Measurement

  2. Lab Overview • Measure flow of water using three different flow meters • Measure flow manually to obtain actual flow rate • Use known flow rates and meter reading to construct calibration curves for each meter

  3. Lab Purpose • Gain experience with calibration curves • Familiarization with flow meters • Gain additional experience with LabView

  4. Rotameter • Simplest type • Operator read • Height of bob corresponds to rate of flow • Height * Constant = Flow Rate • Our constant was C’m=113

  5. Orifice Plate • Constricts flow to create pressure differential between two sides of plate • Pressure differential is proportional to flow rate • Create calibration curve as with Rotameter

  6. Magnetic Flow Meter • Most sophisticated meter • Easily computer monitored • Displays flow rate as a percent of the maximum measureable flow rate • Percent is displayed visually on the meter, and as a voltage that is monitored via computer

  7. Magnetic Flow Meter VI • Top is raw voltage • VI takes voltage from meter and multiplies it by conversion factor • Final output is flow rate in kg/s • Bottom is final VI • Max flow rate was 2.11 kg/s

  8. Conclusions Recommendations • This lab demonstrated how to use Rotameter and Magnetic flow rate meters • Found constants to relate meter readings to flow rates • Learned to create calibration curves • Read the lab beforehand • Think about how to do lab • Teamwork • Insure all meters are working correctly

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