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# CIM

### Few things to remember

Force = F=PA
Newtons 2nd law of motion Force Mass * Accelaration F=ma downward force acting on an object= mass & Gravity W = mg (Gravity = 9.81 M/S^2)
Boyel's law At constant temparature the products of pressure & volume is constant for a given mass of gas, this is mathematically writen as p1v1= p2v2= p3v3= constant
1 bar pressure equal to 10 N/cm^2, 14.5 psi, 100,000 pascal (N/M^2)
flow rate equation Airflow rate Q depends on the number of extend retract cycles of the cylinder per minute Q = V* Cycle/Min usually this is expressed in terms of the air consumption at atmospheric pressure or free air delivered (FAD)
What is FAD FAD = Q * Compression ratio (eg. 5 bar pressure to atmosphere = 5 + 1)
Structure of Pneumatic systems Energy Supply >>>>>Inputs (sensors)>>>>>>Processing>>>>>>>Controls>>>>>>Actuators
Air Service unit Air filter, Pressures regulating valve, pressure gauge & Lubricator
labelling of valve ports 1-P (pressure port) 2,4 or A,B working lines 3,5 or R,S exhaust ports
Pilot valve labelling open 1 to 2 (12) (Y, 5/2) (Z, 3/2) open 1 to 4 (14) (Z, 5/2) open 1 to 2 (10) (Z, 3,2)