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Instrumentation I

Code:

LACI21014

Sigla:

I1

Áreas Científicas
Classificação	Área Científica
OFICIAL	Instrumentação e Me

Ocorrência: 2021/2022 - 1S

Ativa?	Yes
Página Web:	portal.ips.pt/ests/pt/ucurr_geral.ficha_uc_view?pv_ocorrencia_id=555458
Unidade Responsável:	Departamento de Sistemas e Informática
Curso/CE Responsável:

Ciclos de Estudo/Cursos

Sigla	Nº de Estudantes	Plano de Estudos	Anos Curriculares	Créditos UCN	Créditos ECTS	Horas de Contacto	Horas Totais
EACI	26	Plano de Estudos 14	2	-	6	75	162

Língua de trabalho

Portuguese

Objetivos

To make the students of the 2nd year of the Degree in Automation Engineering Control and Instrumentation of EST Setúbal learn the fundamental principles of measurement and have the capacity to understand the operation of the most used sensors in the measurement of position, displacement, speed, deformation, pressure and level.

Resultados de aprendizagem e competências

On successful completion of the curricular unit, student will be able to
• Understand the functioning of automatic control systems and specify the function of each of its components.
• Contextualizing the role of instrumentation in an automatic control a system;
• Describe the operation of the main components of a measuring instrument: transducer, signal conditioning circuit, indicators and recorders;
• Specify measuring instruments according to their characteristics;
• Understand the principles of transducers used to measure position, deformation, velocity, acceleration, force and pressure;
• Design instrumentation systems;
• Assemble experiences with the aim of measuring physical quantities and calibrate transducers;
• Interpret and analyze treat experimental results considering the characteristics of the measuring instruments.

Modo de trabalho

Presencial

Pré-requisitos (conhecimentos prévios) e co-requisitos (conhecimentos simultâneos)

Frequency and passing in this course assumes that students have basic knowledge of electrotechnology and electronics.
(Omitted issues respect the legal legislation in force and the internal rules and regulations of the management bodies of ESTSetúbal / IPS).

Programa

1. Instrumentation and measurement units and systems
International System of Units (SI)
Concept of sensor, transducer and actuator
Static and dynamic characteristics of a measuring sensor
Normalized signals of current and pressure
Measurement errors: linearity, hysteresis, offset and gain.
2. Measuring transducers of physical quantities
Position, speed and acceleration (potentiometer, LVDT, LVDC, accelerometer and solve)
Force (extensometers, Hooke's law, Young's modulus and piezo resistors)
Magnetic Field (Hall Effect)
Optics (photoresistance, photodiode and phototransistor)
Tachometer generator and digital tachometer
Encoder (incremental and absolute)
3. Signal conditioning circuits
Wheatstone Bridge (b.C. and Co.)
Wheatstone bridge equilibrium condition (c.c. and c.a.)
Amplification and attenuation
Instrumentation Amplifiers
Transmitters (measurement chain)
Converters (voltage-current)
4. Pressure measurement
Pressure setting
Pressure units and conversions
Absolute, relative and differential pressure
Static, dynamic and total pressure
Barometers, pressure gauges, pressure switches
Liquid and Bourdon column manometer
Manometers of diaphragm (deformation of a membrane)
Load cells (ring and recessed)
Protection of pressure sensors: diaphragm, siphon, sealing
Calibration (dead weight scale)
Specification, selection and installation of pressure sensors
5. Level Measurement
Measurement methods:
Communicating vessel level
Floats and torsion level measurement
Hydrostatic pressure
Resistance
Capacity
Ultra sounds
RADAR
Radioactivity
Gravimetric
Measurement of net interfaces level
Density measurement (constant level)
Specification, selection and installation of level sensors
6. Pneumatic instrumentation
Nozzle system
Pneumatic relay or amplifier
Balance of forces and transmitters
P / I and I / P Converters
PID controller (principle of operation)
Compressors

Bibliografia Obrigatória

Dias Pereira; Theoretical Notes, D.Pereira, 2016
Dias Pereira; Problems Guide, D.Pereira, 2017
Dias Pereira; Laboratory Guide, D.Pereira, 2017

Bibliografia Complementar

daily Reley McConnel; Engineering Measurements, Wiley
William C. Dunn; Fundamental of Industrial Measurements and Process Control, McGraw-Hill
Bela Liptak; Instrument Engineers' Handbook, CRC Press
Douglas M. Considine; Process/Industrial Measurements and Control Handbook, McGraw-Hill

Métodos de ensino e atividades de aprendizagem

The teaching method is based on the presentation of the subject by the teacher, in the resolution of problems and in the accomplishment of laboratory works, that cover the totality of the programmatic contents of the curricular unit.

Tipo de avaliação

Distributed evaluation with final exam

Componentes de Avaliação

Designation	Peso (%)
Teste	70,00
Exame	0,00
Participação presencial	10,00
Trabalho escrito	20,00
Total:	100,00

Componentes de Ocupação

Designation	Tempo (Horas)
Estudo autónomo	86,00
Frequência das aulas	75,00
Total:	161,00

Obtenção de frequência

The minimum grade in the continuous assessment by tests is 10 points in each test.
In situations where the faculty deems it necessary, final classifications higher than 16 points may be defended in oral exams. If the student does not attend these oral tests, his final classification will be 16 points.

(In the evaluation by final exam or tests, questions related to the laboratory component of the UC are foreseen)
Once approved in continuous assessment, the student will only be able to improve the grade during the appeal period. Attendance and approval of performance in laboratory classes (work execution and report) is mandatory for approval at the UC.

Rules for taking tests:
• When requested, it is mandatory to present an identification document during the tests.
• Only written tests are accepted in test/exam notebooks from EST Setúbal.
• Leaving the room can only take place 30 minutes after the start of the test/exam and implies the final delivery of the test, and the delay in entry cannot, under any circumstances, exceed 15 minutes.
• During the tests, calculating machines with graphic or alphanumeric capabilities can only be used if the teacher authorizes it.
• During the competitions, the handling or display of mobile phones (which must be turned off) and other electronic equipment is not allowed, and the use of any of this type of equipment is the reason for canceling evaluation test.

Fórmula de cálculo da classificação final

The final grade is calculated according to the following formula:
NF=0.7*EF+0.2*FP+0.1*LAB;
EF- average grade of the 2 tests or classification in the final exam;
FP- classification of the proposed problems (must be presented by the student befores the date of the regular period exam);
LAB- laboratory performance classification.

In the case of exam evaluation, the final grade corresponds to the classification obtained in this test.
Improved distributed final classification
The student can improve his final grade obtained by continuous assessment by taking the exam.