Ans:-
Gas based system is called pneumatic system. A pneumatic system uses compressed air as medium. It consist of element like compressor , reservior , control valve cylinder piston and motor.
1. Air in any pneumatic system must be clean and dry to reduce wear and avoid maintenance. Initially the inlet air is filtered by filter to remove dirt and smoke particles otherwise it damages air compressor.
2. Function of air compressor is to provide pressursied air. It incresses air pressure by reducing its volume. This compressed air is processed though air treatment unit.
3. The volume of compressed air is stored in reservior .
4. A pressure sensitive switch is attached to the reservior that activates the compressor through on-off control and motor.
5. The control valve operates the cylinder –piston as per load requirement.