Patent ID: 7958768
Filing Date: 2011-06-14
Classification: G01L,G05D,Y10T

Abstract:
1. A dual differential pressure regulator, comprising: a housing; a reference port coupled to the housing and operable to receive a reference pressure; a supply port coupled to the housing and operable to receive a supply pressure; a high port coupled to the housing and operable to provide an output pressure, the high port coupled to a supply valve operable to place the high port in selective fluid communication with the supply port, the output pressure of the high port being a relatively fixed amount greater than the reference pressure; an exhaust port coupled to the housing and operable to be connected to an exhaust pressure; and a low port coupled to the housing and operable to receive an input pressure, the low port coupled to an exhaust valve operable to place the low port in selective fluid communication with the exhaust port, the input pressure of the low port being a relatively fixed amount less than the reference pressure.