Ken McFarland Pascal Matengo

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  Gain experience with calibration curves  Familiarization with flow meters  Gain additional experience with LabView

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

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

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

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

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