| 摘要 |
#CMT# #/CMT# The method involves arranging the valves at the opposite ends of a test volume. An input pressure (p-e) lies against the valve (V1) upstream the test volume, while an output pressure lies downstream the test volume, behind the other valve (V2). The input pressure is greater than the output pressure. The former valve is controlled to open for a duration, while the latter valve is controlled to open for another duration. A pressure controller is retrieved and the method is interrupted with the identification of the leakage of the former valve. #CMT#USE : #/CMT# Method for testing the impermeability of two controllable valves. #CMT#ADVANTAGE : #/CMT# The input pressure lies against the valve upstream the test volume, while an output pressure lies downstream the test volume, behind the other valve, where pressure controller is retrieved and the method is interrupted with the identification of the leakage of the former valve, and thus ensures improved impermeability testing method with reduced input pressure at minimum trigger levels. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an impermeability testing method. (Drawing includes non-English language text). 50 : Starting a program A,B : Program sequences V1,V2 : Valves p-e : Input pressure p-z : Test volume pressure t-w : Waiting time. |
