Handheld Flow Calibrator
Progress ReportMAE 126B | Project E5
May 31st, 2013
Jonathan Ma, Yung Nguyen, Mario Zuniga presented by
Project Advisor | Craig CorriganCourse Advisor | Jan Kleissl
Project E5 | Handheld Flow Calibrator
Project Objectives & Progress Summary
PROJECT DESCRIPTION
Project E5 | Handheld Flow Calibrator
OBJECTIVES• Develop a cost-effective and highly accurate low flow
calibrator that utilizes two separated methods to measure mass flow rate and volumetric flow rate.
“JYMeter”
JYMeter
Abs. Pressure
Absolute Pressure Sensor
Density
Temperature, Humidity,
Volumetric Flow Rate
Differential Pressure
Mass Flow Rate
Volumetric Flow Rate
(from DP) * density
Mass Flow Rate Sensor
Project Tasks
Project E5 | Handheld Flow Calibrator
1. Research • Volumetric flow
methods• Mass flow methods
2. Calculation & Engineering Design
3. Hardware & Fabrications
4. Calibrate the calibrator
• Estimate the appropriate size materials• Understanding resolutions and analog signals
communication
1. Integrate DP Sensor, Mass flow, Humidity
2. Integrate Temp & Abs. Pressure Sensor
3. Oversampling Programming
4. Conditioning the tubes5. Finding appropriate
Length6. Put everything into
photoboard
1L/Min Flow 1. Perform Procedures 1.1 & 1.2
(Basic Calibration)1. DP2. Mass Flow3. Temperature, Humidity4. Abs. Pressure
Research| Numerical Analysis
Project E5 | Handheld Flow Calibrator
VOLUMETRIC FLOW RATE : DIFFERENTIAL PRESSURE METHOD
Laminar Flow Element
= Poiseuille Equation
Source: www.alicat.com
±𝐾obtain calibration equation from calibration experiment
Design | Numerical Analysis
Project E5 | Handheld Flow Calibrator
VOLUMETRIC FLOW RATE : DIFFERENTIAL PRESSURE METHOD
= Poiseuille Equation
Source: www.alicat.com
Low Flow Rate (1 L/min) Calculation – Single Tube
Higher Flow Rate (10 L/min) Calculation – LFE Model
Research |Numerical Analysis
Project E5 | Handheld Flow Calibrator
MASS FLOW METHOD: CONSTANT TEMPERATURE DIFFERENTIAL
Source: www.absoluteastronomy.com
}
m* (mass flow rate)
Mass Flow MeterÞ No calculationÞ Mainly Calibrations
Prototyping| Fabrication Progress
Project E5 | Handheld Flow Calibrator
From Midterm Report| Initial Concept Design
Initial Concept Design
Prototyping| Fabrication Progress
Project E5 | Handheld Flow Calibrator
Final Protoboard Design
Prototyping| Fabrication Progress
Project E5 | Handheld Flow Calibrator
A Closer Look
Prototyping | Fabrication Progress
Project E5 | Handheld Flow Calibrator
SOFTWARE : OVERSAMPLING
Displays:• Average of 50 readings for noise reduction• Average of entire run for data analysisUsing Method of Weighted Averages
Experiment | Calibration Experimental Set-Up
Project E5 | Handheld Flow Calibrator
Experiment | Calibration Set-Up
Project E5 | Handheld Flow Calibrator
Experiment| Preliminary Tube Set-Up
Project E5 | Handheld Flow Calibrator
Experiment | Preliminary Calibrations
Project E5 | Handheld Flow Calibrator
Volumetric Flow Rate: Calibration For Differential Pressure Sensor
Source: I&EC Fundamentals, Vol 6 , No.4
0 1 2 30
200
400
600
800
1000
1200
f(x) = 376.947938202583 x + 131.280303445715R² = 0.997567026545887
f(x) = 362.526364308444 xR² = 1
DP: Calibration with Straight 17cm Tapered VFR Theoretical Linear (VFR Theoretical) Experimental Data with GilibratorLinear (Experimental Data with Gilibrator)
Experiment | Preliminary Calibrations
Project E5 | Handheld Flow Calibrator
Mass Flow Rate: Calibrating Mass Flow Sensor
Source: I&EC Fundamentals, Vol 6 , No.4
0 200 400 600 800 1000 12000
0.5
1
1.5
2
2.5
3
f(x) = 0.0000000030936502 x³ − 0.00000705204 x² + 0.0059584493 x + 0.50051273R² = 0.999991079931622
f(x) = 0.0000000035994261 x³ − 0.000007474651 x² + 0.0058983385 x + 0.4964060701R² = 0.999652633109191
Procedure 1.1 | Mass Flow Rate Sensor Cal-ibration
JYM Polynomial (JYM) DataSheetPolynomial (DataSheet)
Volumetric Flow Rate (ccm)
Volta
ge (V
)
Experiment | Preliminary Calibrations
Project E5 | Handheld Flow Calibrator
Mass Flow Rate: Calibrating Mass Flow Sensor
Source: I&EC Fundamentals, Vol 6 , No.4
Summary of Findings During Calibration• Offset due to the pump, not as efficient.• Temperature of the air changes.
1 2 3 4 5 6 70
200
400
600
800
1000
1200
Mass Flow Rate CalibrationJYMeter Gilibrator
Trial Set
Flow
Rat
e
Project Management & Work Schedule
Project E5 | Handheld Flow Calibrator
Week Projected Tasks from the Beginning Tasks
1 Microcontrollers & Volumetric & Mass Flow Research
Microcontrollers & Volumetric & Mass Flow Research
2 Setting up the Arduino & Sensor Characteristic Research
Setting up the Arduino & Sensor Characteristic Research
3 Numerical Analysis of Device Components (non-sensor related)
Numerical Analysis of Device Components (non-sensor related)
4 Initial Concept Design & Sensor Integration
Initial Concept Design & Sensor Integration
5 Prototyping Calibrator for Experimental Data Input/Output Programming
Prototyping ((Received Basic Arduino Stuff + Windsesnor), Stock Room Shopping Trip #1
6 Functionality Testing Prototyping (Waiting for Craig or order DP&Mass flow sensor)
7 Enclosure Integration Prototyping / Craig asked for re-design of 10L/min.
8 Competitive Comparison with Gilibrator
Prototyping (Waiting for McMaster Order), Stock Room Shopping Trip #2, Craig gave us Gilibrator, Began Calibration Test Run
9 Altitude Testing Prototyping (Waiting for Sparkfun & Digikey final order), Calibrated DP & Mass Flow, Fabrication All Connections
10 Evaluation Finish prototype + last calibration experiment + Enclosure
Remaining Project Tasks
Project E5 | Handheld Flow Calibrator
1. Research • Volumetric flow
methods• Mass flow methods
2. Calculation & Engineering Design
3. Hardware & Fabrications
4. Calibrate the calibrator
• Estimate the appropriate size materials• Understanding resolutions and analog signals
communication
1. Integrate DP Sensor, Mass flow, Humidity
2. Integrate Temp & Abs. Pressure Sensor
3. Oversampling Programming
4. Conditioning the tubes5. Finding appropriate
Length6. Put everything into
photoboard
1L/Min Flow 1. Perform Procedures 1.1 & 1.2
(Basic Calibration)1. DP2. Mass Flow3. Temperature, Humidity4. Abs. Pressure
THE END. Questions?
Project E5 | Handheld Flow Calibrator
AssignmentsResearch• Hardware & Components - Jonathan• Mass Flow Methods - Mario• Volumetric Flow Methods – YungPrototyping• Programming – Mario/Jonathan • Numerical Analysis – Yung• Circuit Set-Up – Mario/Jonathan • Fabrication – Team Calibration – Team • Gilibrator Operation• Data Analysis • Testing & Turning
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