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Pneumatics (Greek:which means "breath") is a branch of physics applied to technology that makes use of gas or pressurized air.
Pneumatic systems used extensively in industry are commonly powered by compressed air or compressed inert gases. A centrally located and electrically powered compressor powers cylinders, air motors, and other pneumatic devices. A pneumatic system controlled through manual or automatic solenoid valves is selected when it provides a lower cost, more flexible, or safer alternative toelectric motors and actuators.
Pneumatic logic systems (sometimes called air logic control) are often used for controlling industrial processes, consisting of primary logic units like:
• And Units
• Or Units
• 'Relay or Booster' Units
• Latching Units
• 'Timer' Units
• Sorteberg relay
• Fluidics amplifiers with no moving parts other than the air itself