Pressure Process Station (3501)
The Pressure Process Station, Model 3501, consists of two air tanks, each having a 0.44-liters (2-gallon) capacity, which can be patch-connected individually, in series, or in parallel. Used individually, each tank, demonstrates a single capacity process with a single volume and minimal lag. Connected in parallel, the tanks demonstrate a single capacity process with dual volume. Connected in series, the tanks show a dual capacity process, both with interacting lag.