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Flashcards in Level Test Deck (20):
1

two engineering units used for level measurement are __________

Feet and percent

2

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

Thermal expansion and atmospheric pressure

3

Ultrasonic level transmitters depend on ______

Sound

4

Radar level transmitters depend on ______

Radio waves

5

What can make level measurements difficult?

Items inside the vessel, foam

6

What device is best for reading foamy liquid?

Ultrasonic levels

7

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

Guided Radar Levels

8

The specific gravity of water is _____

1.00

9

A bubbler does not need a ______

Wet leg

10

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

Measures tank pressure
Exposed to atmosphere

11

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

Filled with liquid
Measures tank pressure

12

When measuring from a tape gauge 100% is ______

At the top

13

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

The glass would break and liquid would spill

14

A sight glass provides _____ Level measurement

Continuous

15

Name one use for point level measurement

Low level alarm

16

Head pressure _____

Cannot be negative

17

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

Specific gravity of the liquid

18

Continuous level is used _____

To detect changes in level

19

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

Volume

20

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

Level