A Gas Sensor System for Harsh Environment Applications

Gardner, J. W.; Wei, Guangsheng; Vincent, Timothy A.; Volans, K.; Tremlett, Piers R.; Wotherspoon, Tracy; Dyer, David C.

doi:10.1016/j.proeng.2015.08.608

Cited by 13 publications

(10 citation statements)

References 3 publications

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“…The characterisation of miniature MOX sensors used in this work on a benchtop gas testing rig has previously been reported [12]. It has previously been demonstrated that the novel coatings applied to the sensors used in the module provide excellent sensitivity and good selectivity compared to many commercial devices [13].…”

Section: Introductionmentioning

confidence: 98%

Investigation of the response of high-bandwidth MOX sensors to gas plumes for application on a mobile robot in hazardous environments

Vincent

Xing

Cole

et al. 2019

Sensors and Actuators B: Chemical

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Highlights Custom sensor module developed for use in harsh environments by rescue personnel High-bandwidth MOX sensors evaluated to plumes of VOCs inside a wind tunnel PdPt SnO2, WO3 and NiO coated MOX sensors produce fast responses to low ppm plumes Pulse broadening of VOC plumes observed and mapped inside tunnel Performance verified in real world, unit is ready for use in hazardous environments

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Section: Introductionmentioning

confidence: 98%

Investigation of the response of high-bandwidth MOX sensors to gas plumes for application on a mobile robot in hazardous environments

Vincent

Xing

Cole

et al. 2019

Sensors and Actuators B: Chemical

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“…However, they did not consider any multivariate techniques, such as PCA, to detect and classify a mixture of gases. In another study [10], a system to detect and classify carbon monoxide and oxygen was developed. However, a mixture of A, E and P was not considered for the classification [10].…”

Section: Introductionmentioning

confidence: 99%

“…In another study [10], a system to detect and classify carbon monoxide and oxygen was developed. However, a mixture of A, E and P was not considered for the classification [10]. Several techniques were again reviewed by Rydosz et al [11] for the detection of acetone to analyze the health condition of diabetic patients.…”

Section: Introductionmentioning

confidence: 99%

Wireless E-Nose Sensors to Detect Volatile Organic Gases through Multivariate Analysis

et al. 2020

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Gas sensors are critical components when adhering to health safety and environmental policies in various manufacturing industries, such as the petroleum and oil industry; scent and makeup production; food and beverage manufacturing; chemical engineering; pollution monitoring. In recent times, gas sensors have been introduced to medical diagnostics, bioprocesses, and plant disease diagnosis processes. There could be an adverse impact on human health due to the mixture of various gases (e.g., acetone (A), ethanol (E), propane (P)) that vent out from industrial areas. Therefore, it is important to accurately detect and differentiate such gases. Towards this goal, this paper presents a novel electronic nose (e-nose) detection method to classify various explosive gases. To detect explosive gases, metal oxide semiconductor (MOS) sensors are used as reliable tools to detect such volatile gases. The data received from MOS sensors are processed through a multivariate analysis technique to classify different categories of gases. Multivariate analysis was done using three variants—differential, relative, and fractional analyses—in principal components analysis (PCA). The MOS sensors also have three different designs: loading design, notch design, and Bi design. The proposed MOS sensor-based e-nose accurately detects and classifies three different gases, which indicates the reliability and practicality of the developed system. The developed system enables discrimination of these gases from the mixture. Based on the results from the proposed system, authorities can take preventive measures to deal with these gases to avoid their potential adverse impacts on employee health.

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“…Gas sensors are attracting great interest in various fields such as manufacturing , medical diagnosis , and environmental monitoring . Gas sensors with high sensitivity and selectivity are imperative for real time and leakage detections of toxic gases.…”

Section: Introductionmentioning

confidence: 99%

“…It is noteworthy that the adsorption capacity and sensitivity of the CNT membrane to the target gases increased with the increase in the number of chlorine atoms in the phenolic compounds. © 2018 American Institute of INTRODUCTION Gas sensors are attracting great interest in various fields such as manufacturing [1,2], medical diagnosis [3,4], and environmental monitoring [5,6]. Gas sensors with high sensitivity and selectivity are imperative for real time and leakage detections of toxic gases.…”

mentioning

confidence: 99%

Sensing and adsorption study of gaseous phase chlorophenols on functionalized carbon nanotube membrane

Kanchanatip

Tulaphol

Den

et al. 2018

Env Prog and Sustain Energy

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The adsorption equilibrium isotherms as well as gas sensing of three chlorinated phenolic compounds (CPCs) including phenol, 2‐chlorophenol, and 2,4‐dichlorophenol by acid‐functionalized carbon nanotube (CNT) membrane were studied. CNTs were synthesized via floating catalyst chemical vapor deposition method at 800°C and then functionalized with a mixture of HNO3 and H2SO4. The functionalized CNTs were vacuum filtered to form CNT membranes. The adsorption isotherm followed the Langmuir adsorption model better than the Freundlich model, suggesting monolayer adsorption. The maximum adsorption capacities were found to be 61.35, 93.46, and 104.17 mg g−1 for phenol, 2‐chlorophenol, and 2,4‐dichlorophenol, respectively. The desorption energy determined via thermogravimetric analysis indicates that adsorption of all three CPCs onto the CNT membranes belonged to chemisorption type. For the gas sensing test, the CNT membrane showed fast response to the tested CPCs with good stability and repeatability. The sensitivity values obtained were 5.39 × 10−2, 3.35 × 10−2 and 2.58 × 10−2 for 2,4‐dichlorophenol, 2‐chlorophenol, and phenol, respectively. It is noteworthy that the adsorption capacity and sensitivity of the CNT membrane to the target gases increased with the increase in the number of chlorine atoms in the phenolic compounds. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S315–S322, 2019

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A Gas Sensor System for Harsh Environment Applications

Cited by 13 publications

References 3 publications

Investigation of the response of high-bandwidth MOX sensors to gas plumes for application on a mobile robot in hazardous environments

Investigation of the response of high-bandwidth MOX sensors to gas plumes for application on a mobile robot in hazardous environments

Wireless E-Nose Sensors to Detect Volatile Organic Gases through Multivariate Analysis

Sensing and adsorption study of gaseous phase chlorophenols on functionalized carbon nanotube membrane

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