Calibration system and housing
First Claim
1. A calibration housing for use in calibrating a sensor responsive to a characteristic of a gas, said calibration housing comprising:
- an enclosure having a liquid inlet, a liquid outlet and a liquid passage extending between the liquid inlet and the liquid outlet, said liquid passage including a permeable portion which is at least somewhat permeable to at least one of the gas and a component of air;
said liquid passage including a sparging chamber section, a settling chamber section, and an inlet section leading from the liquid inlet to the sparging chamber section, said enclosure including a dividing wall between the sparging chamber section and the settling chamber section;
a gas injection passage for use in injecting a gas into the inlet section of the liquid passage section;
a gas vent leading from the settling chamber section, said liquid outlet leading from the settling chamber section whereby gas and liquid received by the settling chamber section from the sparging chamber section can pass out the gas vent and the liquid outlet, respectively; and
a barrier coated on said permeable portion which is less permeable than said permeable portion to said one of the gas and said component of air, said barrier also serving to reduce any mass transfer between said permeable portion and liquid therewithin and between said permeable portion and said gas.
1 Assignment
0 Petitions
Accused Products
Abstract
A calibration system comprising a sensor cassette including at least one sensor to be calibrated and a housing having a liquid passage including a chamber. The housing is coupled to the sensor cassette to place the liquid passage in fluid communication with the sensor cassette. The housing has a gas injection passage through which a gas can be injected into the liquid passage to mix with a calibration liquid in the housing. A gas vent vents the gas from the housing. Porous media is provided in the chamber. The gas and calibration liquid pass through the porous media, and the porous media assists in rapid mixing of the gas and the calibration liquid.
41 Citations
27 Claims
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1. A calibration housing for use in calibrating a sensor responsive to a characteristic of a gas, said calibration housing comprising:
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an enclosure having a liquid inlet, a liquid outlet and a liquid passage extending between the liquid inlet and the liquid outlet, said liquid passage including a permeable portion which is at least somewhat permeable to at least one of the gas and a component of air; said liquid passage including a sparging chamber section, a settling chamber section, and an inlet section leading from the liquid inlet to the sparging chamber section, said enclosure including a dividing wall between the sparging chamber section and the settling chamber section; a gas injection passage for use in injecting a gas into the inlet section of the liquid passage section; a gas vent leading from the settling chamber section, said liquid outlet leading from the settling chamber section whereby gas and liquid received by the settling chamber section from the sparging chamber section can pass out the gas vent and the liquid outlet, respectively; and a barrier coated on said permeable portion which is less permeable than said permeable portion to said one of the gas and said component of air, said barrier also serving to reduce any mass transfer between said permeable portion and liquid therewithin and between said permeable portion and said gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A calibration system comprising:
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at least one sensor to be calibrated, said sensor being responsive to a characteristic of a gas; a housing having a liquid inlet, a liquid outlet and a liquid passage extending between the liquid inlet and the liquid outlet; conduit means for coupling the liquid inlet and liquid outlet to the sensor; said housing having a gas injection passage through which a gas can be injected into the liquid passage; means for venting the gas from the housing; at least one of said liquid passage and the conduit means including a permeable portion which is at least somewhat permeable to at least one of the gas and a component of air; and a barrier coated on said permeable portion which is less permeable than said permeable portion to said one of the gas and said component of air, said barrier also serving to reduce any mass transfer between said permeable portion and liquid therewithin and between said permeable portion and said gas. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification