metrology the science of measurement l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Metrology The Science of Measurement PowerPoint Presentation
Download Presentation
Metrology The Science of Measurement

Loading in 2 Seconds...

play fullscreen
1 / 34

Metrology The Science of Measurement - PowerPoint PPT Presentation


  • 641 Views
  • Uploaded on

Metrology The Science of Measurement. 164 Education Liaison & Outreach. Let’s take a trip back in time…. Prehistoric people didn’t have time to measure. But over time…. people started growing food. and developing permanent settlements. So, they needed a system of measurement….

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Metrology The Science of Measurement' - Antony


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
metrology the science of measurement
MetrologyThe Science of Measurement

164 Education Liaison & Outreach

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

let s take a trip back in time
Let’s take a trip back in time…

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

prehistoric people didn t have time to measure
Prehistoric peopledidn’t have time to measure

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

but over time
But over time….

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

people started growing food
people started growing food

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

and developing permanent settlements
and developing permanent settlements

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

so they needed a system of measurement
So, they needed a system of measurement…

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

or there would be mayhem
or there would be mayhem!

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

history of measurement
History of Measurement

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

egyptian cubit
Egyptian Cubit
  • Used to build pyramids
  • Dependent on the pharaoh
  • Missed calibration was punishable by death!

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

fast forward 5000 years to current measurement systems
Fast-forward 5000 years to current measurement systems

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metric system si

International System

of Measurement

Metric System (SI)

SEVEN BASE UNITS

Mass Kilogram (kg)

Length Meter (m)

Time Second (s)

Temperature Kelvin (K)

Electric Current Ampere (A)

Amount of Substance Mole (mol)

Luminous Intensity Candela (cd)

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metric system si13
Metric System (SI)
  • Simple to use
    • Bases of ten
  • All other units derived from primary seven
    • For example: V = cm3 = 1 mL

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

now a couple of definitions
Now, a couple of definitions…

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

slide15

Metrology

“the science that deals with measurement”

Measure

“to determine the dimension, quantity or capacity of something”

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrology concepts

Measurement Result

Potential Value

Metrology Concepts

Uncertainty

  • Value assigned to a measurement result that characterizes how well it is known/unknown

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrology concepts17

NMI

Inaccurate Measurements

You, the Consumer

Metrology Concepts

Traceability

  • Unbroken chain of comparisons to the SI units, all having stated uncertainties

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrology concepts18
Metrology Concepts

Calibration

  • Set of operations that establish the relationship between values of quantities indicated by a measuring instrument and a reference standard

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrologist

Calibration Engineer

Calibration Technician

Metrologist
  • Designs and runs measurement calibrations & tests
  • Analyzes the results
  • Determines the final accuracy of the device under test

Metrologist

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrology careers
Metrology Careers

Scientific Metrology

  • Organization and development of measurement standards and their maintenance (highest level)

NIST Atomic Clock

Accurate to 1 s in 20 million years

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrology careers21
Metrology Careers

Industrial Metrology

  • Adequate functioning of measurement instruments used in industry as well as production and testing processes

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

metrology careers22
Metrology Careers

Legal Metrology

  • Measurements that influence economic transactions, health and safety

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

who needs accurate measurements
Who Needs Accurate Measurements?

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

pharmaceutical industry
Pharmaceutical Industry
  • Metrology laboratories test weights and volume standards for pharmaceutical companies
  • Products include medicines like aspirin, antibiotics, vaccines, insulin, & vitamins

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

defense industry
Defense Industry
  • Metrology laboratories test standards for many military and defense companies
  • These companies make the guidance systems for the Patriot missiles and other things that are

top secret

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

space station satellites
Space Station, Satellites….
  • Metrology laboratories test standards for many companies that provide parts of the space shuttle
  • These parts include the metal, heat shield, electronics, fabrics, o-rings, optics, and tires

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

retail measurements
Retail Measurements
  • State metrology laboratories test standards used to test retail scales and meters
  • These include gas pumps, produce scales, milk, bread and other packaged items, and price scanning systems

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

slide28

Who Needs Accurate Measurements?Everybody!

Weights and Measures measurements

affect more than $6.6 trillion of the $13.2 trillion

U.S. GDP (1996)

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

interested in metrology
Interested in Metrology?

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

interested in metrology30
Interested in Metrology?

“Metrology community is facing a shortage of

qualified, trained metrology personnel across the U.S.”

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

slide31
NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

for more information
For More Information

NCSL International (NCSLI)

www.ncsli.org

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

Special Thanks to FreeFoto.com, www.sxc.hu

Developed by

NCSLI Committee 164

slide33
Special Thanks to

FreeFoto.com, www.sxc.hu, Microsoft Office Clipart

Presentation Developed by

NCSLI Committee 164

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT

questions comments suggestions
Questions, Comments, Suggestions?

NCSL INTERNATIONAL

SERVING THE WORLD OF MEASUREMENT