The variable input pressure regulation system was designed to carry out a test in accordance with the ASTM E1105 standardized commercial window testing procedure. This testing standard dictates that a negative pressure must be maintained within 2% of a constant value while a curtain wall spray system saturates the window from the outside. The test lasts around 15 - 20 minutes depending on the window type, though it may last longer if the user chooses. Currently, the test is performed by a user regulating differential pressure with a variable pump power dial, a gate valve, and a high precision liquid manometer. This design aims to automate the system, allowing variable input and high precision pressure regulation.
Farrell, Sean; Grimes, Dupri; McElvogue, William; and Richter, Nathan, "Variable Input Pressure Regulator" (2018). Mechatronics Final Projects. 13.