Portable combustible gas detector
First Claim
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1. A combustible gas detector comprising:
- a portable, person wearable housing, the housing defines an internal region;
an array of polymeric-type combustible gas sensors carried in the region exposed to adjacent ambient atmosphere; and
executable instructions, carried in the region, for analyzing sensor outputs to establish the presence of a combustible concentration of the gas.
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Abstract
A portable detector of combustible or explosive gases incorporates a polymeric-type sensor or sensor array coupled to a programmed processor which carries out an evaluation of one or more signals from the sensor or array to evaluate the presence of combustible or explosive vapors. Non-polymeric sensors such as temperature sensors, humidity sensors and/or pressure sensors can also be incorporated and their outputs evaluated to compensate the outputs of the sensor or array of sensors. The detector can be housed in a sealed enclosure and energized by a battery.
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Citations
37 Claims
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1. A combustible gas detector comprising:
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a portable, person wearable housing, the housing defines an internal region;
an array of polymeric-type combustible gas sensors carried in the region exposed to adjacent ambient atmosphere; and
executable instructions, carried in the region, for analyzing sensor outputs to establish the presence of a combustible concentration of the gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A portable combustible gas detector for sensing at least one gas capable of combustion, the detector comprising:
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an enclosure;
at least one polymer sensor, carried by the enclosure, that senses a selected gas capable of combustion and generates at least a first signal indicative thereof;
at least one non-polymer sensor that senses a condition different than gas and generates at least a second signal indicative thereof;
a filter positioned between the at least one polymer sensor and the environment;
a processor with an input to receive the first signal and the second signal, the processor includes at least one output port coupled to an indicating circuit to provide an indication of a concentration of the selected combustible gas. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A portable combustible gas detector for sensing at least one gas capable of combustion when in a predetermined concentration in a region comprising:
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a multi-part enclosure;
at least one polymer sensor, carried in the enclosure that senses a selected gas capable of combustion and generates a first signal indicative thereof;
at least one non-polymer sensor that senses a condition different than the gas and generates at least a second signal indicative thereof;
a filter that is positioned between the at least one polymer sensor and the environment to protect the one polymer sensor from particulates and water in the environment;
a sealing element between enclosure parts to block water from entering into the enclosure;
a processor with an input to receive the first signal and the second signal;
instructions, executable by the processor, responsive to at least both signals for establishing the presence of the selected gas in accordance with a selected criterion, wherein the processor includes at least one output coupled to an indicating element to provide an indication representative of the concentration of the selected gas.
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31. A combustible gas detector comprising:
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at least one polymeric-type sensor of a selected combustible gas, first circuitry to compare an output of the sensor to at least one threshold indicative of a pre-selected fraction of an explosive concentration of the gas; and
second circuitry to monitor detector performance. - View Dependent Claims (32, 33, 34)
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35. A portable combustible gas detector comprising:
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a housing defining at least one internal region wherein the housing has at least one gas permeable inlet to enable combustible gases in the adjacent ambient atmosphere to enter the at least one internal region, the combustible gases at least partially absorb light energy in the three micron to four micron wavelength range;
an array of polymeric-type gas sensors carried in the at least one region;
a processor with executable instructions, carried within the housing, for analyzing outputs to establish the presence of a combustible gas;
an indicator indicating the presence of a combustible gas. - View Dependent Claims (36, 37)
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Specification