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INSTRUMENTATION > QUIZ 1 > Flashcards

QUIZ 1 Flashcards

1
Q

defines as the art and science of measurement and control of the process variables within a production or manufacturing area

A

Instrumentation

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2
Q

the engineering discipline that applies control theory to design systems with desired behaviors

A

Control Engineering

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3
Q

Give at least 1 Instrumentation and control engineer are required to do

A

Design and Develop a Control System
Maintain and manage the existing Control System
Collaborate with design engineers and others stuffs involved in the production process
Troubleshoot
Ensure quality standards are maintained, also comply with safe and healthy regulations

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4
Q

Give 1 subject to learn

A

Industrial Instrumentation
System Dynamics
Process Control
Control System

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5
Q

What do you call the known quantity?

A

Standard

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6
Q

The quantity to be measured

A

Measurand

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7
Q

The read out

A

Result

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8
Q

Process of Comparison

A

Measurement

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9
Q

the first element in the Control loop to measure process variable, they are also called as primary elements.

A

Sensing Device

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10
Q

Sample of Sensing Device

A

Thermocouple
Conductivity Level Sensor
Venturi Tubes
Orifice Plates

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11
Q

Device that converts mechanical to electrical energy

A

Transducer

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12
Q

a device that used to convert a reading from a sensor or transducer into a standard signal to a monitor or controller

A

Transmitter

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13
Q

Sample of Transmitters

A

Pressure transmitters
Flow Transmitters

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14
Q

a device that converts one type of signal into another type of signal

A

Converter

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15
Q

transmit the process variable measurement from the instrument to a centralized control system.

A

Signal

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16
Q

Three types of signals

A
  1. Pneumatic Signal
  2. Analog Signal
  3. Digital Signal
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17
Q

the signals produced by changing the air pressure in a signal pipe in proportion to the to measured change in a process variable.

A

Pneumatic Signal

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18
Q

The most common standard electrical signal is the 4-20mA current signal

A

Analog Signal

19
Q

discrete levels or values that are combined in specific ways to represent process variables .

A

Digital Signal

20
Q

a human readable device that displays information about the process. Some indicators simply display the measured variable while others have control buttons that enable operators to change settings

A

indicators

21
Q

a device that records the output of a measurement devices.

A

Recorder

22
Q

a device that receives data from a measurement instrument, compares that data to a programed set point, and, if necessary, signals a control element to take corrective action.

A

Controller

23
Q

Sample of a controller

A

PLC or programmable logic controllers
DCS or Distributed Control System

24
Q

is part of control system that acts to physically change the manipulated variable. in most cases, the final control element is a valve used to cut the fluid flow.

A

Correcting Element/Final Controller

25
Q

What is the final controller

A

Actuator - valve actuators

26
Q

What does ISA means?

A

International Society of Automation

27
Q

refers to the methods of changing or refining raw materials to create a product

A

Process

28
Q

efers to the methods that are used to control process variables when manufacturing a product

A

Process Control

29
Q

process variable is a condition of the process fluid ( a liquid of gas) that can change the manufacturing process in some way

A

Process Variable

30
Q

Give 1 Process Variable

A

Pressure, Flow, Level, temperature, Density, pH

31
Q

value for a process variable that is desired to be maintained

A

Set Point

32
Q

difference between the measurable variable, and the set point.

A

Error

33
Q

an undesired change in one of the factors that can affect the process variable

A

Load disturbance

34
Q

What are the three tasks of a control loop

A

Measurement, Comparison,& Adjustment

35
Q

If in a physical system there is no automatic correction of the variation in its output, it is called an open loop system.

A

Open Loop Control System

36
Q

is a type of loop system where the output has an effect upon the input quantity in such a manner as to maintain the desired output value.

A

Closed Loop Control System

37
Q

What is the another name for Open Loop System?

A

Non-Feedback Control System

38
Q

gathering information on the controlled variable and comparing it to the set point; making a decision based on the comparison; and taking action to eliminate any differences between the controlled variable and end the set point.

A

Feedback Control

39
Q

acts the moment a disturbance occurs, without having to wait for a deviation in process variable. This enables a feedforward controller to quickly and directly cancel out the effect of a disturbance.

A

Feedforward Control

40
Q

This combination has its function on the system, the feedforward control attempts to eliminate the effects of measurable disturbances and the feedback control corrects for unmeasurable disturbances, modelling errors.

A

Feedforward plus Feedback Control

41
Q

Process design and operations often calls for keeping a certain ratio two or more flow rates.

A

Ratio Control

42
Q

the controller output is split and sent into two or more control valves.

When a single controller is employed to control two or more final control elements.

A

Split Range Control

43
Q

there are two or more controllers of which one controller’s output drives the set point of the another controller.

A

Cascade Control

INSTRUMENTATION (1 decks)

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