Level Test Flashcards

1
Q

two engineering units used for level measurement are __________

A

Feet and percent

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2
Q

If a vessel’s intake and discharge are both cut off the level may change due to ______

A

Thermal expansion and atmospheric pressure

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3
Q

Ultrasonic level transmitters depend on ______

A

Sound

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4
Q

Radar level transmitters depend on ______

A

Radio waves

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5
Q

What can make level measurements difficult?

A

Items inside the vessel, foam

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6
Q

What device is best for reading foamy liquid?

A

Ultrasonic levels

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7
Q

What device is suited for measuring level in a vessel with obstructions?

A

Guided Radar Levels

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8
Q

The specific gravity of water is _____

A

1.00

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9
Q

A bubbler does not need a ______

A

Wet leg

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10
Q

A dry leg or Differential Pressure level transmitter has one side that ______ and one side that is ______

A

Measures tank pressure

Exposed to atmosphere

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11
Q

A wet leg level transmitter has one leg ______ and one leg that ______

A

Filled with liquid

Measures tank pressure

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12
Q

When measuring from a tape gauge 100% is ______

A

At the top

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13
Q

If a sight glass does not have blocking valves what would happen?

A

The glass would break and liquid would spill

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14
Q

A sight glass provides _____ Level measurement

A

Continuous

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15
Q

Name one use for point level measurement

A

Low level alarm

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16
Q

Head pressure _____

A

Cannot be negative

17
Q

When using pressure to determine level in a vessel what should be known?

A

Specific gravity of the liquid

18
Q

Continuous level is used _____

A

To detect changes in level

19
Q

When measuring a fluid, starting at the bottom and extending to the surface measures what?

A

Volume

20
Q

When measuring a fluid, starting at the surface and extending down measures what?

A

Level