Methods and systems for estimating gas supply pressure
AssigneeAgilent Technologies, Inc.
InventorSteven Kirk
Life of this patent
Estimating the term…
Abstract
Methods and systems for estimating gas supply pressure are described herein. The method can include measuring a runtime valve duty cycle for a valve of a gas chromatography system. The method can include estimating a runtime supply pressure from the runtime valve duty cycle and at least one of a runtime flow rate or downstream pressure based on one or more calibration valve duty cycles corresponding to one or more calibration supply pressures and one or more calibration flow rates. The method can include, responsive to determining the runtime supply pressure is greater than a threshold supply pressure value, generating a notification that the runtime supply pressure is greater than the threshold supply pressure value.
Claims20
A method, comprising:
- measuring, by a controller, a runtime valve duty cycle for a valve of a gas chromatography (GC) system;
- estimating, by the controller, a runtime supply pressure from the runtime valve duty cycle and at least one of a runtime flow rate or downstream pressure based on one or more calibration valve duty cycles corresponding to one or more calibration supply pressures and one or more calibration flow rates or the downstream pressure;
- and
- responsive to determining the runtime supply pressure is greater than a threshold supply pressure value, generating, by the controller, a notification that the runtime supply pressure is greater than the threshold supply pressure value.
A gas chromatography (GC) system, comprising:
- a valve;
- and
- a controller of an electronic pneumatic control module configured to:
- measure a runtime valve duty cycle for the valve;
- estimate a runtime supply pressure from the runtime valve duty cycle and at least one of a runtime flow rate or downstream pressure based on one or more calibration valve duty cycles corresponding to one or more calibration supply pressures and one or more calibration flow rates or the downstream pressure;
- and
- responsive to determining the runtime supply pressure is greater than a threshold supply pressure value, generate a notification that the runtime supply pressure is greater than the threshold supply pressure value.
Dependencies are inferred from the claim text.