Methods and Applications

Slides:



Advertisements
Similar presentations
Gas Laws.
Advertisements

Pressure Pressure = Force / Area.
DO NOW: Convert 770 mm Hg  atm Convert 100,900 Pa  atm  mm Hg.
Chapter 9 Fluid Mechanics
Resistance in Fluid Systems
Pressure and Temperature
web notes: lect2.ppt pressure3.pdf pascal.pdf.
Pressure and Temperature William Thomson “Lord Kelvin”
Fluid Mechanics-I Spring 2010
Pressure Methods Manometer Elastic Transducers Measuring Vacuum
Pressure Measurements
Lecture 2: Pressure Measurements
Pressure measurements. INTRODUCTION Absolute pressure = Pgage + Patm. Atmospheric pressure = 100 KP a =14.7 Psi =1 0.2 m H 2 o =760 mm H g =760 torr.
Fluid Mechanics Fluid Statics. Pressure field Pressure is a scalar field: p = p(x; y; z; t) The value of p varies in space, but p is not associated with.
Pressure Thermodynamics Professor Lee Carkner Lecture 2.
Pressure Measurement Many text define the force per unit area exerted by a fluid on its containing wall as a pressure and the force per unit area that.
Pressure Sensors.
Pressure Measurement Muhajir Ab. Rahim
Pressure Measurements Techniques to measure pressure.
Pressure Measurement Why is it important?. Pressure Measurement Asses the situation –What is the range of pressures to be measured? –Is pressure dynamic.
Measuring Pressure. Atmospheric Pressure Recall: Caused by the weight of the air molecules above us. Typically kPa or Pa Measured using.
Chapter 3: Pressure Measurement
Fluid Statics Lecture - 2.
PRESSURE CHEMISTRY MODELING PRESSURE MACRO- SCALE Pressure is the amount of force exerted over a given area The force exerted is caused by particles.
Copyright: Prof S.A. Kinnas
Fluid Mechanics Chapter 13 2 Fluid Anything that can flow A liquid or a gas Physics Chapter 13.
CHAPTER 5: PRESSURE 5.1 Pressure and Its Units
QUESTIONS.
Gases: Pressure and Manometers
Pressure and Temperature William Thomson “Lord Kelvin”
Muhajir Ab. Rahim School of Mechatronic Engineering, KUKUM
Measurement of Pressure Manometry
Atmospheres and Conversions: 1.00 atm = x 10 5 Pa = kPa = 760. Torr = 14.7 psi To convert pressure: 1.Turn what you have to atm 2.Multiply.
Gauge pressure Most pressure gauges compare to Atmospheric (i.e. this room is at 0 Gauge) Absolute p is 1 atm more P = P gauge + 1 atm 1 atm = x.
1 Fluid Mechanics Chapter 13 2 Fluid Anything that can flow A liquid or a gas.
Copyright: Prof S.A. Kinnas
1 Gases Mr. Wally Chemistry. 2 Kinetic Theory of Gases ► Molecules in random motion: strike each other and walls of container. ► Force exerted on walls.
Pressure and fluid statics
Dr. Kamel Mohamed Guedri Umm Al-Qura University, Room H1091
FLUID MECHANICS 1. Fluid Mechanics is defined as physical science dealing with the action of fluids at rest or in motion, and applications of devices.
Gases © 2009, Prentice-Hall, Inc. Gases. © 2009, Prentice-Hall, Inc. Characteristics of Gases Unlike liquids and solids, gases –expand to fill their containers;
Explorations of Pressure and Variations of Pressure First, what is pressure?  Can you think of examples of pressure?
Hydrostatic Pressure Contents: How to calculate Whiteboards.
Pressure measurement Prof.R.G.Telrandhe. Need of pressure measurement? Pressure? Differential quantity Different pressures and relationship between them.
PROPERTY OF PRESSURE z (m) Pressure the same in all directions P=  gz Pressure always perpendicular to a surface. A B Pressure the same at A and B.
Lecture 4. Pressure. 4.1 Pressure and it units Pressure = “the normal (perpendicular) force per unit area” Pressure at the bottom of the static (nonmoving)
©1997 by M. Kostic Ch.9: Pressure & Velocity Measurements Pressure Concept:Pressure Concept: …it is an inward-normal force per unit (contact) area [N/m.
Gas Pressure Meter (Engineering World Health) Advisor: Prof. Ken Gentry Client: Prof. John Webster, Engineering World Health Engineering World Health Team.
Pacific school of Engineering Sub: I.P.C Topic: Pressure measurement Guided by Piyush modi Mayani Chintak Sudani Dhrutik Bhikadiya.
Pressure Measurements
MEASUREMENT OF PRESSURE.. Shantilal shah engineering college. NAME:SARIYA ARTI ENROLL.NO: SUB:FLUID MECHANICS. BRANCH :CIVIL. SEM: 3 rd.
Principles of Pressure Measurement Franklin L. Scamman, MD.
Pressure Measurement PI – I URVISH URVISH PI-I.
Electric Pressure Transducer
Pressure Measurements
Pressure Pressure is defined as the force exerted by a fluid per unit area. Units in SI are Pa=N/m2. The pressure unit Pascal is too small for pressure.
Principles of Pressure Measurement
Understanding Pressure Sensors
Chapter 6 Gases 6.2 Gas Pressure.
INTRODUCTION TO ELECTRONIC INSTRUMENTATION
Elementary Mechanics of Fluids
1- ما تعليقك على هذه الصورة ؟؟
Copyright: Prof S.A. Kinnas
Group members K17CE10 K17CE49 K17CE12. Introduction Classification of pressure Pressure measurement instruments Mechanical gauges.
 water at 4° C = x 103 kg/m3 SI unit = kg/m3  varies with temperature and pressure Significantly for gases Not much for liquids or solids.
Measurement of Pressures and Temperatures
Gas Pressure.
Pressure Measurements
Pressure.
Chapter 3 Fluid Statics.
Presentation transcript:

Methods and Applications PRESSURE MEASUREMENT Methods and Applications CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Overview Pressure (P ) expresses the magnitude of normal force (F-N) per unit area (A-m2) applied on a surface(Crowe et al. 2005) Units: Pa(= N/m2), psi(=lbf/in2), bar (=105 Pa=100 kPa), mbar (=100 Pa=1 hPa), atm (=101.3 kPa), mmHg (or Torr), inHg, etc. Note: For every Unit: hUnit=hectoUnit=100 Unit Where Pabs : Absolute pressure Patm : Atmospheric pressure (standard is: 101.3 kPa =14.696 psi=760 mmHg=29.92 inHg) Pgage : Gage pressure CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Pressure Measuring Devices Bourdon Gage: http://www.efunda.com/DesignStandards/sensors/bourdon_tubes/images/Bourdon_tube_A.gif http://www.cpigauges.com/images/gauges/WeldGageStlCsBM400psi.jpg http://www.hydraulicspneumatics.com/FPE/images/sensors1_1.jpg Principles: change in curvature of the tube is proportional to difference of pressure inside from that outside the tube Applications: tire pressure, pressure at the top or along the walls of tanks or vessels CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Pressure Measuring Devices Strain Gage Principles: ∆ P  ∆ Resistance  ∆ Voltage Applications: Sensors for internal combustion engines, automotive, research etc.  CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Pressure Measuring Devices Quartz Gage Piezoelectric transducers http://upload.wikimedia.org/wikipedia/commons/c/c4/SchemaPiezo.gif http://www.ransohoff.com/images/systems/transducerlgr.jpg Principles: ∆ Pressure  ∆ Charge  ∆ Voltage Applications: measurements with high accuracy, good repeatability, high resolution. e g. Quartz Clock CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Pressure Measuring Devices Piezoresistive Gage Digital Manometer Principles: ∆Pressure = ∆Charge = ∆Resistance = ∆Voltage Applications: Very accurate for small pressure differentials e.g. Difference between indoor and outdoor pressure CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Pressure Measuring Devices U-tube Manometer http://www.efunda.com/formulae/fluids/images/Manometer_A.gif Principles: Hydrostatic Law ∆P=ρ g h CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Pressure Measuring Devices U-tube Manometer http://www.armfield.co.uk/images/H12.gif http://hyperphysics.phy-astr.gsu.edu/Hbase/fluids/flupic/bern5.jpg Mercury Water Manometer Air Water Manometer Applications: air pressure, pipe pressure, etc. CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

UT Manometer Applet Click here to connect to UT’s Interactive Fluids Applets website CE319F - Elementary Mechanics of Fluids - Laboratory UT Austin

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.