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Exam prep > IET 108 > Flashcards

IET 108 Flashcards

1
Q

_____ flow measurement instrument is the easiest to install in a running system

A

Ultrasonic

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2
Q

Mass flow meters often measure the _____

A

Flow of Liquid

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3
Q

What is the disadvantage of

Magmeters?

A

Some they wont measure some materials, such as pure water

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4
Q

What is the advantage of magmeters?

A

Theyre non invasive

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5
Q

A vortex flow meter will most likely have a _____ sensing device

A

Bluff Body

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6
Q

A Differential Pressure cell is not used with a _____

A

Rotometer

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7
Q

What doesnt a Magmeter use to as an indicator?

A

Pressure drop

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8
Q

Do Differential Pressure flow measurement devices work well with solutions such as pulp?

A

No

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9
Q

When is turbulent flow most desirable?

A

When fluids must be moved great distances

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10
Q

What is Laminar flow?

A

Uniform, smooth flow

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11
Q

What is Volumetric flow?

A

The measurement of the volume of fluid that passes at a given point in time

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12
Q

A bluff body is part of what type of meter?

A

Vortex

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13
Q

What is one advantage of ultrasonic meters?

A

They are able to work with changing materials in the same system

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14
Q

A _____, _____, and _____ are pipeline restrictions that cause pressure drop used to measure flow

A

Venturi tube, orfice plate, and flow nozzle

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15
Q

What is Flow rate?

A

Volume/Time

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16
Q

What is Total flow?

A

The rate of flow at a given point in time

17
Q

What is Mass flow?

A

The quantity of a flowing liquid by mass

18
Q

What is Differential pressure?

A

The comparrison of pressure at two specific points

19
Q

What is Volumetric flow?

A

The volume of fluid moved from point A to point B

20
Q

What is Turbulent flow?

A

Flow that is great for mixing

21
Q

A differential pressure flowmeter does not maintain a _____ and does not measure _____

A

Variable flow area

Absolute pressure

22
Q

When measuring steam flow where should the measuring instrument be located?

A

Below the flow element

23
Q

When measuring liquid flow what can ruin measurement accuracy?

A

Air bubbles

24
Q

When does flow measurement become inaccurate?

A

When conditions are different from when the system was designed

25
Q

What is rangeability?

A

The ratio of maximum to minimum flow in a desired range

26
Q

An _____ is a primary flow element consisting of a thin-circular metal plate with a sharp edged round hole in it

A

Orifice plate

27
Q

A Coriolis meter measures what three things?

A

Mass, Volume, and Density

28
Q

What does a coriolis meter consist of?

A

A magnet and coil mounted on a tubing section at the points of maximum motion

29
Q

What does a vortex shredding meter consist of?

A

A pipe section with a symmetrical vertical bluff body across the flowing stream

30
Q

What does a magnetic meter consist of?

A

A stainless steel tube lined with non-conductive material, with two coils mounted on the tube like a saddle

31
Q

What does a turbine meter consist of?

A

Turbine in the stream and a magnetic pickup that measures the pulses created by the blades

32
Q

What meter is commonly used for stock flow measurement in paper plants?

A

Magnetic meter

Exam prep (4 decks)

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