Light emitting diode absorption spectroscopy for combustible gas monitoring

Fanchenko, S. D.; Baranov, Alexander; Savkin, A. V.; Samotaev, Nikolay

doi:10.1088/1757-899x/151/1/012021

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Open-path detectors may be used for the latter. (55)(56)(57) The open-path detector consists of two separate block-radiational and measuring-which are placed at a distance from one another (Fig. 3).…”

Section: Optical Sensorsmentioning

confidence: 99%

“…Halogen lamps or semiconductive structures based on GaInAsSb/AlGaAsSb (in the wavelength range of 1.6-2.4 µm) and InAsSb/InAsSbP (in the wavelength range of 2.7-4.7 µm) can be used as radiation sources and receivers. (57) Various authors have presented an optical scheme based on two beams with wavelengths of 2.3 and 1.7 µm. (55)(56)(57) Recently, fiber optic gas detectors have been developed.…”

Section: Optical Sensorsmentioning

confidence: 99%

“…(57) Various authors have presented an optical scheme based on two beams with wavelengths of 2.3 and 1.7 µm. (55)(56)(57) Recently, fiber optic gas detectors have been developed. (58) Their operation is based on the interferometric or absorption measurement method.…”

Section: Optical Sensorsmentioning

confidence: 99%

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Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

Baranov¹,

Osipova²

2022

Sensors and Materials

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In this paper, we present a brief review of current trends in the development of technologies for manufacturing sensors of flammable gases and volatile organic compounds at pre-explosive concentrations. Different types of gas sensor, including catalytic, semiconductor, and optical sensors, and the principles of their operation are discussed. The advantages and disadvantages of each type of gas sensor are shown. New and traditional production technologies of sensitive elements are discussed, providing improvements of sensor parameters such as effectiveness, miniaturization, and reduction of energy consumption. In conclusion, we suggest future trends and prospects for research and development to increase the sensitivity and selectivity of sensors.

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Section: Optical Sensorsmentioning

confidence: 99%

Section: Optical Sensorsmentioning

confidence: 99%

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Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

Baranov¹,

Osipova²

2022

Sensors and Materials

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show abstract

“…Nowadays, four gas sensing technologies are commonly used for detecting combustible gases in the environment near the lower explosive limit (LEL): optical, semiconductor, electrochemical, and thermocatalytic. Optical sensors detect variation in light absorption at certain wavelengths specific for each flammable gas (except for H 2 , which has no absorption band) [1,2]; the operation principle of semiconductor sensors is based on the change in conductivity of a semiconductor layer when the gas is adsorbed [3][4][5]; the electrochemical flammable gas sensor measures the current based on the electrochemical reaction on the working electrode inside the solid or liquid electrolytic cell (mainly used for H 2 ) [6,7]; the thermocatalytic sensor principle is based on a change of the microhotplate temperature when the gas burns on its surface [8,9]. At high concentrations of methane and hydrogen, the thermal conductivity measurement principle can also be used by detecting the temperature loss of the hotplate [10].…”

Section: Introductionmentioning

confidence: 99%

Silicon MEMS Thermocatalytic Gas Sensor in Miniature Surface Mounted Device Form

et al. 2021

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A reduced size thermocatalytic gas sensor was developed for the detection of methane over the 20% of the explosive concentration. The sensor chip is formed from two membranes with a 150 µm diameter heated area in their centers and covered with highly dispersed nano-sized catalyst and inert reference, respectively. The power dissipation of the chip is well below 70 mW at the 530 °C maximum operation temperature. The chip is mounted in a novel surface mounted metal-ceramic sensor package in the form-factor of SOT-89. The sensitivity of the device is 10 mV/v%, whereas the response and recovery times without the additional carbon filter over the chip are <500 ms and <2 s, respectively. The tests have shown the reliability of the new design concerning the hotplate stability and massive encapsulation, but the high degradation rate of the catalyst coupled with its modest chemical power limits the use of the sensor only in pulsed mode of operation. The optimized pulsed mode reduces the average power consumption below 2 mW.

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Midinfrared Light-Emitting Diodes Based on А3В5 Heterostructures in Gas-Analyzer-Equipment Engineering: Potential and Applications in 2014–2018

Matveev

Sotnikova

2019

Opt. Spectrosc.

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Light emitting diode absorption spectroscopy for combustible gas monitoring

Cited by 3 publications

References 8 publications

Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

Silicon MEMS Thermocatalytic Gas Sensor in Miniature Surface Mounted Device Form

Midinfrared Light-Emitting Diodes Based on А3В5 Heterostructures in Gas-Analyzer-Equipment Engineering: Potential and Applications in 2014–2018

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