nserv6 - Water Droplet(surface tension Finalist in Picture...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Water Droplet (surface tension) Finalist in Picture of the Year 2007 by Ümit Ergin http://commons.wikimedia.org/wiki/File:Dew_on_ a_Equisetum_fluviatile_Luc_Viatour.jpg
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
PRESSURE TRANSDUCERS Manometers are not suitable for: o Measuring very high pressures o Pressures that are changing rapidly in time o and manometer readings can be time consuming. To overcome these problems, mechanical or electronic pressure transducers, such as Bourdon C-tube, strain gage transducer and piezoelectric transducers are employed.
Background image of page 2
Bourdon tube: Consists of a hollow metal tube bent like a hook whose end is closed and connected to a dial indicator needle. Pressure transducers: Use various techniques to convert the pressure effect to an electrical effect such as a change in voltage, resistance, or capacitance. Pressure transducers are smaller and faster, and they can be more sensitive, reliable, and PRESSURE TRANSDUCERS 3 Various types of Bourdon tubes used to measure pressure. precise than their mechanical counterparts. Strain-gage pressure transducers: Work by having a diaphragm deflect between two chambers open to the pressure inputs. Piezoelectric transducers: Also called solid-state pressure transducers , work on the principle that an electric potential is generated in a crystalline substance when it is subjected to mechanical pressure.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Deadweight tester: Another type of mechanical pressure gage. It is used primarily for calibration and can measure extremely high pressures. A deadweight tester measures pressure directly through application of a weight that provides a force per unit area—the fundamental definition of pressure. It is constructed with an internal chamber filled with a fluid (usually oil), along with a tight-fitting piston, cylinder, and plunger. Weights are applied to the top of the piston, which exerts a force on the oil in the chamber. The total force F acting on the oil at the piston–oil interface is the sum of the weight of the piston plus the applied weights. A deadweight tester is able to measure extremely high pressures (up to 10,000 psi in some applications).
Background image of page 4
INTRODUCTION TO FLUID STATICS Fluid statics: Deals with problems associated with fluids at rest. The fluid can be either gaseous or liquid.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/19/2011 for the course AEE 300 taught by Professor Beşyüz during the Spring '11 term at Middle East Technical University.

Page1 / 31

nserv6 - Water Droplet(surface tension Finalist in Picture...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online