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Lessons In Industrial Instrumentation
By Tony R. Kuphaldt
Version 1.14 – Last update January 11, 2011
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c 2008-2011, Tony R. Kuphaldt
This book is a copyrighted work, but licensed under the Creative Commons Attribution
3.0 U...
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Contents
Preface 3
1 Calculus 7
1.1 Introduction to calculus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
iv CONTENTS
2.7.2 Work, energy, and power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
2.7.3 Mechanical sp...
CONTENTS v
3.12 pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
4 DC el...
vi CONTENTS
7 Instrumentation documents 353
7.1 Process Flow Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . ...
CONTENTS vii
9.6 Level switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466
9.6.1 ...
viii CONTENTS
12.7 Function Block Diagram (FBD) programming . . . . . . . . . . . . . . . . . . . . . . 612
12.8 Sequentia...
CONTENTS ix
15.1.4 Example of industrial number formats . . . . . . . . . . . . . . . . . . . . . . 732
15.2 Digital repre...
x CONTENTS
16.2.5 Segment design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 852
16.3 H1 FF Data...
CONTENTS xi
18 Continuous pressure measurement 953
18.1 Manometers . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
xii CONTENTS
19.5.3 Laser level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1119
19.5.4 Magnet...
CONTENTS xiii
21.2 Laminar flowmeters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1272
21.3 Var...
xiv CONTENTS
22.6.3 Hydrogen sulfide gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1461
22.6.4 Carbon...
CONTENTS xv
25.11Split-ranging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1590
25.11....
xvi CONTENTS
27.7.3 Derivative control mode (D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1718
27.8 P, I, an...
CONTENTS xvii
28 Process dynamics and PID controller tuning 1815
28.1 Process characteristics . . . . . . . . . . . . . . ...
xviii CONTENTS
30 Process safety and instrumentation 1979
30.1 Classified areas and electrical safety measures . . . . . . ...
CONTENTS 1
A Flip-book animations 2089
A.1 Polyphase light bulbs animated . . . . . . . . . . . . . . . . . . . . . . . . ...
2 CONTENTS
Preface
I did not want to write this book . . . honestly.
My first book project began in 1998, titled Lessons In Electric C...
4 CONTENTS
So here I am again, writing another textbook. This time around I have the advantage of wisdom
gained from the fi...
CONTENTS 5
• Instrumentation for Process Measurement and Control, by Norman A. Anderson. An inspiring
effort by someone who...
6 CONTENTS
Chapter 1
Calculus
Mathematics is the investigation of an artificial world: a universe populated by abstract entities
and r...
8 CHAPTER 1. CALCULUS
1.1 Introduction to calculus
Few areas of mathematics are as powerfully useful in describing and ana...
1.1. INTRODUCTION TO CALCULUS 9
For example, if the temperature of a furnace (T) increases over time, we might wish to des...
10 CHAPTER 1. CALCULUS
close to each other. In the context of a heating furnace, this could mean increases in temperature ...
1.2. THE CONCEPT OF DIFFERENTIATION 11
1.2 The concept of differentiation
Suppose we wished to measure the rate of propane ...
12 CHAPTER 1. CALCULUS
Graphed as a function over time, the tank’s mass will be seen to decrease as time elapses.
Each dot...
1.2. THE CONCEPT OF DIFFERENTIATION 13
Supposing such a thing were possible, what we would end up with is a smooth graph s...
14 CHAPTER 1. CALCULUS
general sciences. Some of the most common time-based derivative functions include the relationships...
1.2. THE CONCEPT OF DIFFERENTIATION 15
It is also possible to express rates of change between different variables not invol...
16 CHAPTER 1. CALCULUS
1.3 The concept of integration
Suppose we wished to measure the loss of mass over time in a large p...
1.3. THE CONCEPT OF INTEGRATION 17
As we learned previously, the process of differentiation is really just a matter of dete...
18 CHAPTER 1. CALCULUS
The task of inferring lost mass over time becomes more complicated if the propane flow rate
changes ...
1.3. THE CONCEPT OF INTEGRATION 19
In order to accurately calculate the amount of propane mass consumed by the building ov...
20 CHAPTER 1. CALCULUS
The task of inferring total propane mass consumed over time becomes even more complicated
if the flo...
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