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					         Sample Schemes of Work and
                        Lesson Plan

                                                            Engineering
                               OCR Level 3 Principal Learning in Engineering H811
                                 Unit F559: Instrumentation and control engineering


This Support Material booklet is designed to accompany the OCR Engineering Diploma
specification for teaching from September 2008.




© OCR 2009
Contents
Contents                                                                         2
Sample Scheme of Work: OCR Diploma in Engineering Level 3 Unit F559:
Instrumentation and Control Engineering                                          3
Sample Lesson Plan: OCR Diploma in Engineering Level 3 Unit F559:
Instrumentation and Control Engineering                                         20




2 of 21                                                         Engineering Diploma
                                                                                    Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                   60 GLH            Topic       Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                Suggested resources                        Points to note
                                     activities
Unit Overview

This unit will be externally assessed by a two-hour written examination paper. In Section A there will be a number of short answer questions and in Section
B eight long answer questions. The learner is expected to answer all Section A questions and choose four questions from Section B.

The unit provides opportunities to learn about and apply the underpinning theory and principal components in instrumentation and control engineering.
Learners will also learn how to use mathematical principles in the design and implementation of a simple control system. The unit will develop an
understanding of instrumentation and control applications in industry, its impact on the environment and everyday life.
It is intended that learners will develop further knowledge and understanding of a wide range of topics as listed under the learning outcomes section of this
document. From this knowledge and understanding of the theory will come the development of the ability to solve problems in the context of engineering.
The assessment criteria attempt to describe in the clearest terms possible, exactly what a learner will be able to do at the end of the learning experience.
Just as a learning outcome describes events, so assessment criteria describes an activity that learners will be able to demonstrate their competence.
Experience of the role of experimental work is important in any course in instrumentation and control and is recognised in this unit that presenters will
include practical activities so that learners develop skills in conducting and recording experiments. The choice of the practical activities have been left to the
discretion of the presenter.

Personal, Learning and Thinking Skills (PLTS).




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Engineering Diploma                                                                                                                                        3 of 21
                                                                                Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                     60 GLH            Topic   Instrumentation and control engineering
teaching time
                                 Suggested teaching and homework
Topic outline                                                            Suggested resources                      Points to note
                                 activities
Although not mapped because this is an externally assessed unit there are ample opportunities for learners to demonstrate and develop a number of their
PLT’s during the learning experiences provided within this unit.




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4 of 21                                                                                                                               Engineering Diploma
                                                                                               Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                   2 hours           Topic             Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                          Suggested resources                              Points to note
                                     activities
The learner will be able to:            Explain what is meant by instrument and        Have a group discussion and show a video
                                         control engineering                              of a control system. This will then give an      Input → Control → Output
                                        Draw a block diagram of a system showing         insight as to why instrumentation and
Draw a block diagram of a                input, control and output                        control of systems is necessary
system showing input, control,                                                                                                             Input devices:
                                        Explain what is meant by the terms: input,
output and feedback                                                                                                                         potentiometer, thermistor, light dependent
                                         control and output
                                                                                                                                            resistor and potential divider circuits etc
(Systems approach to control
engineering)                            Homework
                                                                                                                                           Output devices:
                                         Draw a labelled block diagram for a central
                                                                                                                                            signal lamp, heater, light emitting diode,
                                         heating system
                                                                                                                                            relay, buzzer, 7 segment display, dc motor
                                                                                                                                            etc




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Engineering Diploma                                                                                                                                                             5 of 21
                                                                                                  Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                     8 hours           Topic             Instrumentation and control engineering
teaching time
                                       Suggested teaching and homework
Topic outline                                                                             Suggested resources                           Points to note
                                       activities
Demonstrate an                            Explain, with the aid of labelled diagrams,       Davey, D.J. et al (1981)
understanding of feedback                  what is meant by open loop control and             Instrumentation and Control                  Open loop control – a system of blocks that
                                           closed loop control                                Cassell                                       are linked together end to end without a
control theory
                                          Give examples of systems that use                                                                built-in checking system
Explain with the aid of the use            feedback eg temperature control, positional
of practical examples, what is             control and servomechanism control.               Bolton, W. (1996)
                                                                                                                                           Closed loop control – a system of blocks
meant by the term ‘open loop’,            State and apply the formula for overall gain       Engineering Instrumentation and Control
                                                                                                                                            that are linked together with a built-in
‘closed loop’ and ‘feed-                   in a system using (a) negative feedback (b)        Butterworth Heinmann
                                                                                                                                            checking system
forward’                                   positive feedback
                                          Homework                                          Knight, S.A. (1989)
State and apply the formula for                                                                                                            Overall gain = A/(1 + βA) for negative
                                             Draw a labelled block diagram of a              Electronics
overall gain in a system using                                                                                                              feedback
                                                system that is using (a) open loop            Heinemann Newnes
negative feedback                               control (b) closed loop control                                                            Overall gain = A/(1 - βA) for positive
(Feedback control theory)                                                                                                                   feedback
                                             Explain, with the aid of labelled
                                                diagrams a system that uses                  Bolton, W. (2006)
                                               (a) temperature control                        Instrumentation and Control systems
                                               (b) positional control                         Newnes
                                               (c) servomechanism control




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6 of 21                                                                                                                                                           Engineering Diploma
                                                                                                Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                   8 hours           Topic             Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                           Suggested resources                            Points to note
                                     activities
                                        From a worksheet carry out calculations for
                                         overall gain for negative and positive
                                         feedback systems
Explain the concept of data             Explain what is meant by data signal              Davey, D.J. et al (1981)                      Pressure senor/transducer:
signal transmission and use of           transmission                                       Instrumentation and Control                    Resistive, strain gauge, inductive,
multiplexers. Understand the            Explain, with the aid of a diagram, what is        Cassell                                        capacitive, semiconductor, ceramic,
                                                                                                                                           piezoelectric and linear variable differential
operation of a basic two input           meant by a multiplexer
                                                                                                                                           transformer
multiplexer                             Explain, with the aid of a diagram, the           Bolton, W. (1996)                             Level sensor/transducer:
                                         principles of operation of a basic two input       Engineering Instrumentation and Control        Conductivity, capacitive, ultrasonic, radar,
                                         multiplexer                                        Butterworth Heinmann
(Data communications and                                                                                                                   nucleonic, load cells, radiometric,
                                        Use manufacturers catalogues to identify                                                          microwave, hydrostatic and sonar
multiplexers)                            and select suitable input
                                         sensors/transducers for practical                 Tooley, M. (2008)
                                         applications                                       Engineering Instrumentation, Measurement
                                        Carry out experiments using input devices          and Control
Identify and select a suitable                                                              Elsevier
input device for a specific
sensing application to include:
pressure, level, flow,




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Engineering Diploma                                                                                                                                                              7 of 21
                                                                                                     Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                     8 hours           Topic              Instrumentation and control engineering
teaching time
                                       Suggested teaching and homework
Topic outline                                                                                Suggested resources                    Points to note
                                       activities
temperature, light,                       Homework                                             Morris, A.S. (2001)                   Flow sensor/transducer:
displacement using                         Draw a labelled diagram of a control system           Measurement and Instrumentation        Ultrasonic, coriolis, vortex, magnetic and
manufacturer’s data sheets.                that you have Investigated. Identify the              Principles                             differential pressure
Undertake experiments using                types of sensors/transducers that are in use          Butterworth
                                           and explain how they are calibrated or set
input devices                                                                                                                          Temperature sensor/transducer:
                                           and how the signals from these devices are
                                           processed and displayed                              Virtual Instrumentation Test lab       Resistance, thermocouple, radiation
                                                                                                 www.derby.ac.uk                        pyrometer
                                           At a suitable time each learner should
                                           present their findings to the rest of the group
                                                                                                Control Engineering Lab               Displacement sensor/transducer:
                                                                                                 www.cussons.co.uk/co/pdf/              Diffraction grating, lasers and variable
                                                                                                 english/controlb.pdf                   resistance signal conditioning




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8 of 21                                                                                                                                                        Engineering Diploma
                                                                                                    Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                   12 hours          Topic              Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                              Suggested resources                           Points to note
                                     activities
Demonstrate an                          Explain, with the aid of a diagram, what is          Duncan, T. (1998)                            The basic op amp is a high performance,
understanding of the use of              meant by an operational amplifier                     Electronics for today and tomorrow            directly coupled amplifier capable of high
AD/DA converters, operational           State the main properties of an op amp with           John Murray                                   gain and stable operation over a wide range
                                         reference to the open-loop gain, input and                                                          of frequencies
amplifiers, PID controllers and          output impedances, giving values
PLCs                                                                                          Bolton, W. (1996)
                                        Draw, a labelled diagram, of an op amp                                                             Main properties:
                                         showing the inverting input, non-inverting            Engineering Instrumentation and Control
                                                                                                                                             High open-loop voltage gain
Design, Analogue and Digital             input and output                                      Butterworth Heinmann
                                                                                                                                             High input impedance
System                                  Explain the action and characteristics of an
                                                                                                                                             Low output impedance
                                         op amp                                               Knight, S.A. (1989)
                                        Draw, a graph, showing the transfer                   Electronics
(Operational Amplifiers                  characteristics of an op amp                                                                       Advantages of negative feedback:
                                                                                               Heinemann Newnes
AD/DA convertors)                       State the advantages of negative feedback                                                           Predictable and constant voltage gain
                                         in an op amp                                                                                        Reduced distortion of the output
                                        Explain, with the aid of a circuit diagram, (a)                                                     Better frequency response giving increased
                                         an inverting amplifier (b) a non-inverting           Virtual Instrumentation Test lab              bandwidth
                                         amplifier (c) a voltage follower (d) an op            www.derby.ac.uk                               Increased stability
                                         amp summing amplifier (e) an op amp
                                         voltage comparator and (f) an op amp
                                         integrator




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Engineering Diploma                                                                                                                                                            9 of 21
                                                                                                Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                  12 hours          Topic             Instrumentation and control engineering
teaching time
                                    Suggested teaching and homework
Topic outline                                                                           Suggested resources                             Points to note
                                    activities
                                       Describe, with the aid of a labelled diagram,      Control Engineering Lab                        Inverting amplifier:
                                        the action and construction of a (a) R-2R           www.cussons.co.uk/co/pdf/                       A = Vo/Vi = -Rf/Ri
                                        ladder DA converter (b) parallel AD                 english/controlb.pdf                           Non-inverting amplifier:
                                        converter (c) counter-type AD converter
                                                                                                                                            A = 1 + (Rf/Ri)
                                       Homework                                           Virtual control laboratory manual
                                        Design, construct and test systems linked to        Eweb.chemeng.ed.ac.uk/courses/control/…./
                                        practical applications within                       intro.html                                     Voltage follower:
                                        the engineering sector                                                                              100% negative feedback is obtained by
                                       Explain, with the aid of diagrams,                 Doebeline, E. (2008)                            connecting the output directly to the
                                                                                            Measurement Systems                             inverting terminal
                                         (a) sequential control
                                         (b) proportional control                           McGraw-Hill
                                         (c) proportional plus derivative control                                                          Summing amplifier:
                                         (d) proportional plus integral control            Bolton, W. (2006)                               Vo = -(V1 + V2 + V3)
                                         (e) proportional, integral and derivative          Instrumentation and Control systems
                                              control (PID)
                                                                                            Newnes
                                         (f) process controllers
                                         (g) pneumatic controller                                                                          Sequential control:
                                         (h) operational amplifier controller              Bolton, W. (1996)
                                                                                            Engineering Instrumentation and Control         On-off mode
                                       Use manufacturers catalogues to identify                                                            On-off devices
                                                                                            Butterworth Heinmann
                                        and select suitable PID controllers for
                                        practical applications




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10 of 21                                                                                                                                                           Engineering Diploma
                                                                                                  Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                   12 hours          Topic             Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                            Suggested resources                           Points to note
                                     activities
Controllers                             Explain, with the aid of diagrams, a               Sung, S.W. et al (2009)                      Proportional control:
                                         programmable Logic Controller (PLC)                 Process Identification and PID control        Float lever
                                                                                             John Wiley and Sons                           Temperature/differential amplifier
                                        Use manufacturers catalogues to identify
                                         and select suitable PLC controllers for            Queudo, J. et al
                                         practical applications                                                                           Pneumatic control:
                                                                                             Digital Control 2000: Past, Present and
                                                                                                                                           Bellows and flapper nozzle
                                                                                             Future of PID control
                                        Carry out experiments using control devices
                                                                                             Elsevier
                                        Design, construct and test systems linked to
                                         practical control applications                     Bolton, W. (2006)
                                                                                             Programmable Logic Controllers               PLC – programmable memory that stores
                                        Homework                                            Elsevier                                      instructions and implements functions
                                         Write a detailed report, showing all results,
                                         from experiments and testing of PID and            PLC Tutorial
                                         PLC controllers                                                                                  PLC Ladder programmes
                                                                                             www.Galil.mc.com

                                                                                            PLC Control Engineer
                                                                                             Icontrol.publicum.com




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Engineering Diploma                                                                                                                                                             11 of 21
                                                                                 Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                  12 hours          Topic      Instrumentation and control engineering
teaching time
                                    Suggested teaching and homework
Topic outline                                                            Suggested resources                        Points to note
                                    activities
                                                                            Industrial PLC Training Video Course      PLC Applications:
                                                                             www.bin95.com                              Conveyor belt packaging lines
                                                                                                                        Pneumatic and hydraulic machines
                                                                                                                        Production and refining processes
                                                                                                                        Robots
                                                                                                                        Signaling systems such as traffic lights




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12 of 21                                                                                                                                      Engineering Diploma
                                                                                                 Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                      6 hours        Topic           Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                              Suggested resources                            Points to note
                                     activities
Explain the difficulties                Explain what is meant by the term signal and         Haslett, C. (2008)                            A waveguide refers to any linear structure
encountered when transmitting            wave guides                                           Essentials of Radio Wave Propagation           that conveys electromagnetic waves
signals using wires as                  Explain the difficulties encountered when             Cambridge UP                                   between its endpoints
frequency increases                      transmitting signals using wires as the                                                             A waveguide is a special form of
                                         frequency increases                                                                                  transmission line consisting of a hollow,
                                                                                              Waveguides basic tutorial
Understand the basic concept            Explain the effect on the transfer of signals                                                        metal tube. The tube wall provides
                                         over long distances when using wire cables            www.esmartstart.com                            distributed inductance, while the empty
of operation of wave guides and                                                                                                               space between the tube walls provide
                                        Explain, with the aid of diagrams, the types
their use when transmitting                                                                                                                   distributed capacitance
                                         of wave guide propagation that are in                Electric and magnetic fields
signals                                  transverse mode:                                      www.behindtheguesses.blogspot.com?2
(Signals and wave guides)                TE modes (Transverse Electric) have no                                                              Waveguides are considerably less
                                                                                               009/07/transverse-electric-and-
                                         electric field in the direction of propagation.       magnetic-fields.html                           complicated than a two conductor cable in
                                         TM modes (Transverse Magnetic) have no                                                               their manufacture and maintenance
                                         magnetic field in the direction of propagation.                                                      Moisture is not a severe problem as with
                                                                                              Waveguides
                                         TEM modes (Transverse ElectroMagnetic)                                                               coaxial cables
                                                                                               www.2.slac.stanford.edu/vvc/accelerator/
                                         have no electric nor magnetic field in the                                                           Do not need gas filling
                                                                                               waveguide.html
                                         direction of propagation.                                                                            There are no concerns with proper
                                         Hybrid modes are those which have both                                                               conductor-to-conductor spacing, or of the
                                         electric and magnetic field components in the                                                        consistency of the dielectric material, since
                                         direction of propagation                                                                             the only dielectric in a waveguide is air




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Engineering Diploma                                                                                                                                                               13 of 21
                                                                                         Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                     6 hours        Topic           Instrumentation and control engineering
teaching time
                                    Suggested teaching and homework
Topic outline                                                                      Suggested resources                    Points to note
                                    activities
                                       Homework                                      Waveguides
                                        Write a report covering all aspects of a       www.esmart.com/_framed/250x/
                                        waveguide system of your choice                radionistics/balanced_lines.html




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14 of 21                                                                                                                                   Engineering Diploma
                                                                                               Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                      8 hours        Topic           Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                            Suggested resources                           Points to note
                                     activities
Explain what is meant by the            Explain, what is meant by the terms:               Davey, D.J. et al (1981)                     Actuator – the element of a correction unit
terms: actuators regulators,             actuator, regulator, transducer and                 Instrumentation and Control                   that provides the power to carry out the
                                         Instrument display                                  Cassell                                       control action
transducers and instrument
                                                                                                                                          Regulator – A feedback control system in
displays                                                                                                                                   which the reference input is fixed over the
                                        Use manufacturers catalogues to identify           Bolton, W. (1996)                             operating time period. The primary purpose
                                         and select suitable actuators, regulators and       Engineering Instrumentation and Control       of a regulator is to maintain a constant
Undertake experiments using              transducers for practical applications              Butterworth Heinmann                          output
controllers, actuators and
                                                                                                                                          Transducer – the element that converts a
regulators. Select controllers,
                                        Explain what is meant by a pneumatic               Leatham-Jones, B. (1987)                      change in some physical variable into a
actuators and regulators for             system                                                                                            related change in some other physical
engineering applications                                                                     Elements of Industrial Robots
                                                                                                                                           variable
                                                                                             Pitman
                                        Draw symbols for the following:                                                                  Instrument display – a device for recording
(Actuators and instrumentation                                                                                                             the measured variable
                                         Single acting cylinder
                                                                                            Bolton, W. (1991)
displays)                                Three-port valve
                                                                                             Instrumentation & process
                                         Double acting cylinder                              Measurements
                                         Five-port valve                                     Longman                                      Apply the formula:
                                                                                                                                           Pressure = force/cross-sectional area




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Engineering Diploma                                                                                                                                                          15 of 21
                                                                                                Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                     8 hours        Topic            Instrumentation and control engineering
teaching time
                                    Suggested teaching and homework
Topic outline                                                                             Suggested resources                         Points to note
                                    activities
                                       Explain, with the aid of diagrams, the               Johnson, C. (2005)                         Electrical final control elements:
                                        application of a (a) single-acting cylinder (b)       Process Control Instrument Technology       Switching devices
                                        double acting cylinder, in a control situation        Pearson Education                           Solenoid type devices
                                                                                                                                          Motors
                                       Explain, with the aid of a diagram, how a            Bentley, J. (2004)
                                        shuttle valve is used when controlling a
                                                                                              Principles of Measurement Systems          Analogue/Digital indicators
                                        single-acting cylinder from two positions
                                                                                              Pearson Education                          Alphanumeric displays – LED and LCD
                                                                                                                                         CRO
                                       List and use all types of instrument display
                                                                                             Bolton, W. (2006)                          Analogue/Digital recorders
                                        devices
                                                                                              Instrumentation and Control systems
                                                                                              Newnes
                                       Homework
                                        Write a report about the experiments that
                                        you have carried out during this session




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16 of 21                                                                                                                                                          Engineering Diploma
                                                                                               Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                      8 hours        Topic           Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                            Suggested resources                      Points to note
                                     activities
Understand the purpose of               Explain what is meant by a monitoring              Ibrahim, D. (2002)                      Monitoring – is the act of observing
monitoring control systems               control system                                      Microcontroller-Based Temperature        something and sometimes keeping a record
                                                                                             Monitoring and Control                   of it for a specified period of time
                                        Describe, with the aid of diagrams, a               Newnes
                                         production-line monitoring system
(Industrial and commercial                                                                  Jaguar Ltd (1994)
applications of control                 Describe, with the aid of diagrams, an alarm        Just In Time Production Line
engineering)                             system that protects a workshop building on         MCB UP
                                         an industrial estate

                                                                                            Chen, H. et al (2009)
                                        State the advantages of using a video               Assembly on moving production line
                                         camera as part of a monitoring system               based on sensor fusion
                                                                                             Emereld Group
                                        Explain, the use of a digital camera within a
                                         monitoring system
                                                                                            Burglar Alarm Monitoring
                                                                                             www.alarm-monitoring.co.ul
                                        Describe, with the aid of diagrams,
                                         monitoring systems that are used in motor
                                         vehicles




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Engineering Diploma                                                                                                                                                  17 of 21
                                                                                             Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                     8 hours        Topic           Instrumentation and control engineering
teaching time
                                    Suggested teaching and homework
Topic outline                                                                          Suggested resources                          Points to note
                                    activities
                                       Explain the principle of operation of an          CCTV Intruder Alarms
                                        embedded monitoring system in white goods          www.mesonline.co.uk

                                       Homework                                          Programming Embedded Systems
                                        Write a detailed report about a monitored          www.le.ac.uk/eg/mjp9/pes1ohp
                                        control system that you are familiar with

                                                                                          How washing machines work                   Embedded system within:
                                                                                           Home.howstuffworks.com                       Washing machines
                                                                                                                                        Spin dryers
                                                                                                                                        Microwaves
                                                                                          Printing Press Measurement and Control
                                                                                                                                        Cookers
                                                                                           www.captec.co.uk
                                                                                                                                        Printers
Use computer packages to               Explain what is meant by simulation software      Virtual Control Laboratory Manual           Mobile phones
model and test analogue and                                                                Eweb.chemeng.ed.ac.uk/courses/
digital instrumentation and            Describe how a computer package can be             Control/courses/…/intro.hmtl
control circuits from an                used to model and test analogue and digital
engineering environment.                instruments                                       Proteus Simulation
Review and act on outcomes                                                                 www.labcenter.co.uk
(Simulation software)




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18 of 21                                                                                                                                                    Engineering Diploma
                                                                                              Sample Diploma Scheme of Work
OCR Level 3 Principal Learning in Engineering H811 Unit F559:
Instrumentation and control engineering
Suggested
                      8 hours        Topic           Instrumentation and control engineering
teaching time
                                     Suggested teaching and homework
Topic outline                                                                           Suggested resources                     Points to note
                                     activities
                                        Carry out tests using simulation software on      Circuit Wizard Software Simulator
                                         control circuits from an engineering               www.maplin.co.uk
                                         environment

                                                                                           Control System Design
                                        Use virtual test equipment such as signal          www.Maplesoft.com/Simulation
                                         generators, oscilloscopes, voltmeters,
                                         ammeters and logic probes
                                                                                           Virtual Instruments
                                                                                            www.spice-software.com
                                        Produce test records against initial design
                                         criteria
                                                                                           Bytronic-Ladder Logic Simulation
                                                                                            Software
                                        Homework
                                                                                            www.Bytronic.net/html
                                         Having used a simulation software package,
                                         describe, with the aid of diagrams, the
                                         experiments carried out and show the test         Plant Simulation
                                         results obtained and your conclusions              www.ferret.com




        = Innovative teaching idea                                                                                                               = ICT opportunity

Engineering Diploma                                                                                                                                     19 of 21
                                     Sample Diploma Lesson Plan
OCR Level 3 Principal Learning in
Engineering H811 Unit F559: Instrumentation
and control engineering
OCR recognises that the teaching of this qualification will vary greatly from centre to centre and
from presenter to presenter. With that in mind, this lesson plan is offered as a possible approach
but will be subject to modifications by the individual presenter.

Lesson length is assumed to be two hours but may be broken up to suit centres individual needs.

Learning Objectives for the Lesson
Objective 1        Learners can explain, with the aid of a diagram, a basic measurement system.
Objective 2        Learners can explain, with the aid of diagrams, the working properties of a variety
                   of temperature sensors.
Objective 3        Learners can select and use a temperature sensor in experiments.


Recap of Previous Experience and Prior Knowledge
      Learners have been introduced to the concept of instrumentation and control engineering
       and are aware of:
             block diagrams
             the definition of a sensors
             the difference between heat and temperature and the temperature coefficient of
              resistance.

Content
Time                Content
10 minutes          Introduction
                    View a video showing temperature sensors at work
                    Verbal exposition and Questioning.

                    Basic three element instrumentation system – Block Diagram
                    (a) input or sensor device (b) signal processor or controller (c) output device or
                    receiver.
15 minutes          State that input sensors are called primary transducers

                    List temperature primary transducers:
                    Bimetallic strip
                    Glass thermometer




20 of 21                                                                             Engineering Diploma
                                  Sample Diploma Lesson Plan
Time              Content
                  Liquid expansion and vapour pressure sensor
                  Resistance type
                  Thermocouples.
                  Look through a manufacturers catalogue and identify the listed primary
                  transducer.
30 minutes        Describe, with the aid of a diagram, the action and construction of the listed
                  primary transducers.
25 minutes        Explain the difference between the following types of thermocouple transducers:
                  Type J/K/T/E/RS/B/N and L.

                  In a resistance type thermometer state that the relationship between
                  temperature and resistance is given by Rt = R0 (1 + αt).

                  Worked example:
                  A resistance thermometer has a resistance R0 of 100Ώ at 00C with a temperature
                  coefficient α of 0.004. Calculate the temperature t when the resistance rises to
                  1020.

                  Activity
                  Provide a worksheet of calculations.

                  Problems associated with glass thermometers:
                  Not very useful for industrial purposes because they are brittle
                  Mercury solidifies at -400C
                  Alcohol boils at about 1200C
                  Not very accurate
                  Reading errors can occur.
20 minutes        Carry out experiments using at least two types of temperature sensors.


Consolidation
Time              Content
5 minutes         Quick fire questions about temperature sensors.
5 minutes         Class discussion – Has learning taken place?
10 minutes        Learners are required to submit a folder, which includes, for each experiments:
Homework
                  a)    a title and description about the experiment
                  b)    a list of equipment used
                  c)    labelled diagrams of how the equipment was assembled
                  d)    a description of the methods used to conduct the experiment
                  e)    readings taken and calculations made
                  f)    presentation of experimental results
                  g)    an explanation of the theory behind the experiment
                  h)    a statement regarding errors and degree of accuracy
                  i)    final comments and conclusions drawn from the experimental data.




Engineering Diploma                                                                        21 of 21