Bentley PULS XM v08.09.00.28 Bentley PULS XM Edition is a stand-alone, Microsoft Windows engineering application used for the calculation of pressure pulsation, acoustic shaking forces and acoustic frequencies in piping systems. It can also be used for reciprocating compressor vessel sizing as per API 618 guidelines. PULS is an object-based graphical interface that provides fast model creation through the use of cut, copy and paste features that reduce repetitive input by the user. Pulsations and shaking forces can be instantly viewed by simply clicking directly on the model, eliminating the need to review voluminous batch output reports, typical of older methodology.