Patent ID: 8757197
Filing Date: 2014-06-24
Classification: G05D,Y10T

Abstract:
1. A combination of an automatic pressure regulator and a thermal type mass flow rate regulator, wherein the combination comprises: (a) an automatic pressure regulator that includes (b) a thermal type mass flow rate regulator, wherein the automatic pressure regulator is operably connected to supply pressure of gas to an upstream side of the thermal type mass flow rate regulator, and wherein the automatic pressure regulator is disposed to regulate a flow rate of gas supplied to an apparatus for semiconductor manufacturing, chemical product manufacturing or pharmaceutical manufacturing, and the automatic pressure regulator is disposed to prevent an overshoot with respect to a temporal flow-in of gas supplied from the thermal type mass flow rate regulator from occurring when the flow rate of gas is changed or when the gas supplied from the thermal type mass flow regulator is switched to another type of gas.