Level Test Flashcards
two engineering units used for level measurement are __________
Feet and percent
If a vessel’s intake and discharge are both cut off the level may change due to ______
Thermal expansion and atmospheric pressure
Ultrasonic level transmitters depend on ______
Sound
Radar level transmitters depend on ______
Radio waves
What can make level measurements difficult?
Items inside the vessel, foam
What device is best for reading foamy liquid?
Ultrasonic levels
What device is suited for measuring level in a vessel with obstructions?
Guided Radar Levels
The specific gravity of water is _____
1.00
A bubbler does not need a ______
Wet leg
A dry leg or Differential Pressure level transmitter has one side that ______ and one side that is ______
Measures tank pressure
Exposed to atmosphere
A wet leg level transmitter has one leg ______ and one leg that ______
Filled with liquid
Measures tank pressure
When measuring from a tape gauge 100% is ______
At the top
If a sight glass does not have blocking valves what would happen?
The glass would break and liquid would spill
A sight glass provides _____ Level measurement
Continuous
Name one use for point level measurement
Low level alarm
Head pressure _____
Cannot be negative
When using pressure to determine level in a vessel what should be known?
Specific gravity of the liquid
Continuous level is used _____
To detect changes in level
When measuring a fluid, starting at the bottom and extending to the surface measures what?
Volume
When measuring a fluid, starting at the surface and extending down measures what?
Level
