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instrumentation and control > MODULE 2: Introduction To Instrumentation > Flashcards

MODULE 2: Introduction To Instrumentation Flashcards

1
Q

The boundary divides the system from the environment by means of signal

A

Systems

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2
Q

A useful way representing a system is a block diagram

A

Systems

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3
Q

The purpose of ______ for making measurements is to give the user a numerical value corresponding to the variable being measured.

A

Instrumentation system

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4
Q

A measurement system have a input of the true value of the variable being measured and an output measured value of that variable.

A

Instrumentation system

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5
Q

Is a system which generates information

A

Process

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6
Q

Is the person who needs this information from the process

A

Observer

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7
Q

Parts of instrumentation system

A
  • process

- observer

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8
Q

Purpose of instrumentation system

A

Link the observer to the process

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9
Q

The process of determining the amount, degree or capacity by comparison with the accepted standards of the system units being used.

A

Measurement

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10
Q

The use of measuring instruments to monitor and control a process.

A

Instrumentation

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11
Q

A device for determining the value or magnitude of a quantity or variable

A

Instrument

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12
Q

Types of instrument according to function:

A
  • Indicating instrument
  • Recording instrument
  • Controlling instrument
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13
Q

Type of instrument: visualizes the process or operation

A

Indicating instrument

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14
Q

Type of instrument: observe and save the measurement reading.

A

Recording instrument

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15
Q

Types of instrument: to control measurement and process.

A

Controlling instrument

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16
Q

Common measured parameters, measured variables or information. Give 5:

A 
Acceleration
Velocity
Displacement
Force-weight
Pressure
Torque
Volume
Mass
Flow rate
Level
Density and more
17
Q

Defined as arrangement of parts with some boundary which work together to provide some form of output from specified inputs.

A

Systems

18
Q

Uses of instrument

A
  • Monitoring of processes and operations
  • Control of processes and operations
  • Experimental engineering analysis
19
Q

Based on electrical or electronic principles for its measurement functions.

A

Electronic instrument

20
Q

Advantages of electronic measurement

A
  • Result high sensitivity rating, the use of amplifier
  • Increase the input impedance, thus lower loading effects
  • Ability to monitor remote signal
21
Q

Devices that can detect physical variables such as temperature, light intensity, or motion and have the ability to give measurable output that varies in relation to the amplitude of physical variable.

A

Sensors

22
Q

This element takes the output from the sensor and converts it into a form which is suitable for display or onward transmission. One example is the analog-to-digital converter (ADC).

A

Signal processor

23
Q

An element which puts the output from the sensor into a suitable form for further processing.

A

SIGNAL CONDITIONER

24
Q

Examples of a signal conditioner

A
  • deflection bridge
  • amplifier
  • oscillator
25
Q

SIGNAL CONDITIONER

-converts impedance change to voltage change

A

Deflection bridge

26
Q

SIGNAL CONDITIONER

- amplifies millivolts to volts

A

Amplifier

27
Q

SIGNAL CONDITIONER

-converts an impedance change into variable frequency voltages

A

Oscillator

28
Q

Represents the measured value in the form which enables an observer to recognize it.

A

DATA PRESENTATION

29
Q

Examples of data presentations are:

A
  • simple pointer
  • chart recorder
  • visual display unit (VDU)
30
Q

Devices that are used to control the input variable in response to the signal from a controller.

A

Actuators

31
Q

Devices that are used to change the format of a signal without changing the energy form.

A

CONVERTERS

32
Q

Element that converts a change in some physical variable into a related change in some other physical variable.

A

TRANSDUCERS

33
Q

Componets of instrumentation system: diagram

A

Input or true value -> sensing element -> signal conditioning element-> Signal processing element -> data presentation element -> output or measured value

instrumentation and control (6 decks)

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