Pneumatic Systems Flashcards
What are the three times of commonly piping systems used?
Grid, decentralized , loop
What is the simplest system?
Grid
What is absolute temperature?
All molecular actions ceases zero degrees
What is the pressure at absolute pressure ?
O
How do you measure vacuum?
With an barometer
What is slope of an air line ?
1 inch over 10 feet
What is dew point?
When moisture drops out of suspension because of a rapid temperature
What is one of the biggest problems?
Moisture
What is a quick exhaust valve used for?
Quickly releasing pressure
When would you use a needle valve?
, When you want to control flow in both direction
How are check valves seated?
By gravity and spring
What does FRL stand for?
Filter regulator lubricant
Why is the order of FRL important ?
Not following those steps in order can cause wear/damage to equipment that is unnecessary
What is the two most common types of traps / drains?
Mechanical and electrical
How are compressors cooled?
Air , water and lubricant
What is isothermal?
When Heat is generated and removed at such a rate as to maintain a constant temperature
What is adiabatic ?
No Heat is added or subtracted
What does the air intake filter control?
Amount of airborne contaminants allowed to enter the Compressor
How is an air receiver classified?
Unfired pressure vessel
What are the two types of compressed air?
Instrument air
Plant air
When you have higher pressure , you need more?
Cooling
When you have more cooling, that can lead to?
More condensation and moisture
What do air inlet filters do?
Protect compressor from atmosphere airborne particles
What are some advantages of pneumatics ?
Smooth acceleration and deceleration
Non - toxic
Presents little to No explosive hazards
Serves as a ready of energy storage
0 degrees kelvin = ?? degrees Celsius
-273. 15
If Rakin is 0, what is the degrees in Fahrenheit?
- 459.73F
What are some disadvantages of pneumatic?
Compressed air is not cheap
Improperly maintained
Wastage can occur
Define condensation
As the change in the state of water Vapor to liquid water in contact with any surface
What is the purpose of a dryer in a pneumatic system?
Lower the dew point so that it does not cause problems in the system
What is the purpose of a safety relief valve in a pneumatic system?
Bleed of excess system pressure
What are two logical starting points when trouble shooting pneumatics?
Starting at the actuator
Working way through air supply
What are pneumatic interlocks?
Prevent personal injury to operators as well as damage to machine,
What is the five types of grouping elements?
Energy supply
Input elements
Processing elements
Control elements
Power components
What are the three seal Types?
Piston
Rod
Rod wiper
What motor prevents coasting and protects from being back driven?
Gerotor motor
What valve increases speed of a cylinder?
Quick exhaust valve
What piping system is subject to air starvation if upstream demand is high?
Grid system
What is the difference between non-venting and venting?
Non-venting regulators cannot regulate pressures downstream above the pressure setting the valve.
Venting regulators can
