Automated stationary gas sensor calibration system and method
OwnerJames Skourlisinventor
Life of this patent
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Abstract
A stationary gas monitoring and testing system includes one or more gas monitoring stations 20, each of which includes at least one gas sensor. The system also includes a supply of testing span gas, a supply of testing zero gas, a gas distribution network connecting each gas sensor to the span gas supply and the zero gas supply through substantially separate conduits, and a controller for enabling the delivery of gas from the supply into the network for delivery to the one or more sensors. A one-way poppet valve at each gas monitor allows the supply conduits to be pressurized in advance. Pre-pressurized separate supply conduits minimize or eliminate the delay in delivering gas to each sensor for testing and calibration.
Claims21
A stationary gas monitoring and testing system, comprising:
- one or more gas monitors, each of which includes at least one gas sensor,
- a supply of testing span gas,
- a supply of testing zero gas,
- a gas distribution network connecting each gas sensor to the span gas supply and the clearance or zero gas supply through substantially separate conduits, and
- a controller enabling the delivery of gas from the supply into the network for delivery to the one or more sensors.
A method of testing multiple sensors in a stationary gas monitoring system substantially simultaneously, comprising the following steps:
- (a) opening a solenoid valve to pressurize a span gas conduit between a supply of span gas and a gas monitor;
- (b) closing the solenoid valve in the span gas conduit;
- (c) opening a solenoid valve to pressurize a zero gas conduit between a supply of zero gas and the gas monitor;
- and
- (d) closing the solenoid valve in the zero gas conduit.
Dependencies are inferred from the claim text.