An example is the temperature variation of the thermoelectric e.m.f. at the junction
of two dissimilar metals. For a copperconstantan (Type T] thermocouplejunction.
the rst four terms in the polynomia
Stretching or compression of a wire introduces axial a; and transverse strain 53-.
3:. = ;and
L
AD
W?
In the elastic range, the relation between stress and strain is as follows
0'" =13 a1
0'1" :E 51'
Cairo University
Faculty of Engineering
Mech. Power Dept.
Spring Semester 2016
M. Sc. Course MEP 601 Fine Measurements
Report on:
Wheatstone bridge Problems
Student Name: Ahmed Emad El-Din Mohamed Osm
Mechanical Power Department
Fine Measurement
Faculty of Engineering
Cairo University
Dec: 2016
Time:
Take home (Assignment)
No. Of Pages: 3
1|3
Mechanical Power Department
Fine Measurement
Faculty of
1
10.7 At what flow rate of 20C water through a 10 cm i.d. pipe would the discharge
coefficient of a square-edged orifice plate ( = 0.4) become essentially independent of
Reynolds number?
Solution:
KN
ME3031
Homework #3
1. Table 1 includes measurements of temperature along a rod whose ends are at a fixed
temperature. The x-coordinate is along the axis of the tube. The uncertainty in the
measurement
3.14 A first-order sensor is to be installed into a reactor vessel to monitor temperature. If
a sudden rise in temperature equal or greater than 100C should occur, shutdown of the
reactor will have to
Quantities & Measurement
Multivariable measurements
2.
Regression
ET ,0 a1T a2T 2 a3T 3 .
Y F ( X )
f : X Z
Measured quantities
Leslie Pendrill 060606
Sought quantities
1
Advanced Measurement Uncerta
Page 1
Queen's University
Department of Mechanical engineering
MECH 215: Engineering Measurements and Instrumentation
Winter 2005, Quiz 1
Work time is 50 min.
This is a closed book test. You are allow
Q5.
A
- Drag type flow meter
Force balance
Drag Force
Gravity
Buoyancy
(usually negligible)
Calibrated for a specific fluid
Fdrag Fbuoyancy W float (Force Balance)
Fdrag C D
V 2 A frontal
2
Fdrag flui
The data on the following page are from manufacturers specications for various
gas ow meters. Determine the best ow meter that will meet the following
requirements:
Resolution 0.2 cubic meters / minut
SECOND ORDER MEASUREMENT SYSTEMS
Earlier in this course we considered first order measurements systems such as the
thermocouple. A transducer was defined as a first order system if there was one
domin
Fine Measurements
Estimation of Measurement Uncertainty
2
1 Introduction
1.1 Objective and Learning Outcome
The objective of this module is to teach the student the scientific approach to estimating t
1.5 Uncertainty Calculations
would be from the historical data used to calculate the sample
standard deviation, and the other would be the average test
result for M measurements.
In summary, the error
MEP 601 Fine Measurements
Static Characteristics of Measurement System
Adapted From
http:/www.idc-online.com/technical_references/pdfs/instrumentation/Transducers.pdf
Objectives
To be able to read an
1
Measurement Uncertainty Workbook
The purpose of this workbook is to show how to apply the concepts of measurement uncertainty in
practical situations.
1 Propagation of Uncertainty
This part helps in
Solved E
Exampless
A set of solved exaamples. This set doess not inclu
ude examples on flow
w measurem
ments, dataa
ments. The llatter subjeccts will be studied
s
laterr on.
acquisitionn, or velocitt
Ewample 44. 1
An op amp has a voltage gain of-103.' The DC power
supply 1s :l:15 V. What' re the maximum input voltage
difference for linear operation?
Solution
The input voltage difference is given b
Uncertainty of Measurement
ftp:/ftp2.bom.gov.au/anon/home/labrad/Reports/Uncertainty%20of%20Measurement.ppt
Dr. Nicole Hyett
Bureau of Meteorology
Australia
Introduction
The ISO guide to uncertainty
References
A2LA (2014). G104 - Guide for Estimation of Measurement Uncertainty in Testing. American Association for Laboratory
Accreditation. https:/www.a2la.org/guidance/est_mu_testing.pdf RECOMMENDE