Sensor with water ingress protection
First Claim
Patent Images
1. A gas monitoring system comprising:
- a sensor disposed within a sensor housing, the sensor housing having an inlet and an outlet, the sensor generating a signal based on a characteristic of a gas within the housing;
a first valve disposed at the inlet; and
a second valve disposed at the outlet, wherein the first valve and the second valve open and close based on an orientation of the sensor housing.
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Abstract
A gas monitoring system that comprises a sensor, a first valve, and a second valve. The sensor is disposed within a sensor housing that has an inlet and an outlet. The sensor generates a signal based on a characteristic of a gas within the housing. The first valve is disposed at the inlet. The second valve is disposed at the outlet. The first valve and the second valve open and close based on an orientation of the sensor housing.
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Citations
26 Claims
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1. A gas monitoring system comprising:
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a sensor disposed within a sensor housing, the sensor housing having an inlet and an outlet, the sensor generating a signal based on a characteristic of a gas within the housing;
a first valve disposed at the inlet; and
a second valve disposed at the outlet, wherein the first valve and the second valve open and close based on an orientation of the sensor housing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A gas monitoring system comprising:
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a conduit constructed and arranged to conduct a flow of gas therethrough;
a sensor disposed within a sensor housing, the housing having an inlet and an outlet, the sensor generating a signal based on a characteristic of the gas within the sensor housing;
a first passage that communicates the conduit with the inlet such that a portion of the gas flowing through the conduit is communicated to the sensor;
a second passage that communicates the conduit with the outlet such that the gas received by the sensor is returned to the conduit by the second passage;
a first valve disposed at the inlet; and
a second valve disposed at the outlet, wherein the first valve selectively seals the inlet from the first passage and the second valve selectively seals the outlet valve from the second passage to inhibit liquid from reaching the sensor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A device comprising:
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a tank that holds a reservoir of liquid;
a sensor provided within a sensor housing, the sensor housing having an inlet, the sensor generating a signal based on a characteristic of a gas within the sensor housing; and
an inlet valve disposed at the inlet, wherein when the device is tilted such that liquid from the reservoir of the liquid held by the tank travels toward the inlet of the sensor housing, the inlet valve closes to substantially prevent the liquid from reaching the sensor. - View Dependent Claims (18, 19, 20, 21)
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22. A gas monitoring system, comprising:
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a conduit constructed and arranged to conduct gas therethrough, the conduit adapted to be in communication with a liquid reservoir for adding humidity to the gas;
a chamber disposed exteriorly to the conduit, wherein a wall that separates the chamber from the conduit comprises an orifice that communicates a portion of the gas in the conduit to the chamber;
a sensor in communication with the chamber to determine at least one characteristic of the gas; and
a valve disposed between the orifice and the sensor to inhibit the liquid from reaching the sensor. - View Dependent Claims (23, 24, 25, 26)
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Specification