Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice Pressure booster 2 | 215 Series P+ 2 Air Service Units 5 10 15 20 25 30 Filling Characteristics (5 litres tank ) Filling time (s) K ratio P2/P1 P1 = Inlet pressure P2 = Tank pressure 0,4 0,2 0,6 0,8 1 1,2 1,4 1,6 1,8 2 0 T’ T'' Method of calculation of the time necessary to increase the pressure in a tank of a given volume using a pressure booster. DATA: P1 = Inlet pressure P2' = Initial tank pressure P2" = Final tank pressure V = Tank volume PROCEDURE: 1) Calculate the K' ratio between the initial tank pressure and the inlet booster pressure (P2'/ P1). 2) Calculate the K'' ratio between the final tank pressure and the inlet booster pressure (P2''/ P1). 3) Locate, on the chart illustrating, the booster filling time, the intersection point between the K’ ratio and the curve, then trace a vertical line from the intersection point to the vertical axis and read the correspondent value T’ (in the example chart, to a ratio of 0.8 corresponds a time value of about 3.6 seconds). 4) Repeat the operation for the K’’ ratio, obtaining the T'' time. 5) Apply the formula T = T'' - T' to obtain the total time needed to take the tank of volume V from the pressure value P2’ to the pressure value P2’. Example of calculation of the necessary time to take a 10L tank from the pressure value P2’ to the value P2” K’ = 0,8 T’ = 3,6 sec. V = 5L. K'' = 1,5 T'' = 12 sec. T = 12-3,6 = 8,4 sec. 5 V ( ) 5 5 ( )
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