Development of a carbon dioxide concentration meter using a solid electrolyte sensor

Sashida, Takao; Saitou, Takatoshi; Egawa, Masamitsu

doi:10.1109/sice.2002.1195474

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…At present, there are two types of gas sensors that are commonly available for monitoring CO 2 concentrations in air, i.e., non-dispersive infrared (NDIR) [29] and solid electrolyte sensor types [30]. Non-dispersive infrared sensors have more technical advantages in terms of long-term stability, accuracy, and power consumption rate during CO 2 measurement [31].…”

Section: Methodsmentioning

confidence: 99%

The Relative Performance of NDIR-based Sensors in the Near Real-time Analysis of CO2 in Air

Pandey

Kim

2007

Sensors

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In this study, the reliability of NDIR-based sensors was explored by evaluating the comparability between measurement systems in the near real-time analysis of CO2. For this purpose, replicate analyses were performed using sensors of two different model types (H-550 and B-530, ELT Company, Korea). Three replicate data of each sensor type collected continuously by side-by-side analysis in three second intervals (a duration of 304 hour) were evaluated for the relative performance of NDIR sensors. The reproducibility of sensors, when assessed by relative standard error (RSE %) values of all sensor units, showed moderate changes with time with the overall mean of 2.33%. When CO2 measurements from all NDIR sensor units were evaluated by correlation analysis, the results showed strong comparability, regardless of the model type. The overall results of this study suggest that NDIR sensors are reliable enough to produce highly comparable data at least in a relative sense.

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Section: Methodsmentioning

confidence: 99%

The Relative Performance of NDIR-based Sensors in the Near Real-time Analysis of CO2 in Air

Pandey

Kim

2007

Sensors

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“…NDIR sensors are spectrosco pic sensors to detect CO2 level by gas absorption at a particular wavelength 48 . Chemical CO2 sensors are in corporated with polymer or solid electrolytes and can be made portable to fit into microelectronicbased sys tems 49,50 . For the detection of O2, colorimetric meth ods based on pHbased dyes such as methylene blue, thionine and polyviologen electrochromic compounds were developed 51 .…”

Section: Metabolites As Quality-indicating Parametersmentioning

confidence: 99%

Application of biosensors in smart packaging

Park

Kim

Lee

et al. 2015

Mol. Cell. Toxicol.

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Smart packaging is an exponentially grow ing field in the food industry, encompassing various fields of technology to aid in controlling the environ ment and detecting changes in the headspace, and trac ing product history. Due to the frequent incidents of foodborne illnesses around the world, the major issues presently facing the industry involve ensuring the qual ity and the safety of its food products. Smart packaging, with builtin sensors and indicators, has been touted as a convenient technology to monitor freshness. In this review, we focus on current applications of sensors and/ or indicators that can detect the freshness of meat pro ducts in smart packaging, since the mechanisms of spo ilage are fundamentally similar in all types of meats. The prerequisites and principles of different types of currently available indicators/sensors for smart pack aging are addressed, and an approach to improve the current technology is discussed.

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“…Optical and electrolyte methods are the most common ways for CO 2 detection in air (Barritault et al, 2013;Sashida et al, 2003). However, no dispersive infrared (NDIR) is the most useful method for CO 2 detection, which works based on gas absorption in mid-infrared region (Tan et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Low cost and miniaturized NDIR system for CO₂ detection applications

Akram

Nikfarjam

Hajghassem

et al. 2020

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Purpose The importance of Carbon dioxide (CO2) gas detection as a greenhouse and exhale breathe gas is an undeniable issue. This study aims to propose a new miniaturized, low cost and portable no dispersive infrared (NDIR) system for detecting CO2 gas. Design/methodology/approach Poly(methyl methacrylate) (PMMA)-based channels with Au coating because of its high reflection properties in IR region were used in this work. The optical windows were fabricated using PDMS polymer which is cost effective and novel in comparison to other conventional methods. The effects of channel dimensions, lengths and entrance angle of light on optical path length and losses were analyzed with four types of channel using both simulation and experimental tests. Findings The simulation results indicate that the 0 degree light entrance angle is the most efficient angle among different investigated conditions. The experimental data are in agreement with the simulation results regarding the loss and optical path length in different types of channel. The experimental tests were performed for the 0.5% up to 20% of CO2 concentration under constant temperature and humidity condition. The results show that the device with 5 and 2 cm channels length were saturated in 4% and 8% concentration of CO2 gas, respectively. Response and recovery times were depending on gas concentration and channels specifications that in average found to be 10 S and 14 S, respectively, for the largest size channel. Moreover, the environment humidity effect on detection system performance was investigated which had no considerable influence. Also, the saturation fraction absorbance value for devices with various dimensions were 0.62 and 0.8, respectively. Practical implications According to the performed curve fitting for practical situation and selected CO2 concentration range for experimental tests, the device is useful for medical and environmental applications. Originality/value PMMA with Au deposition layer was used as a basic material for this NDIR system. Besides, a novel PDMS optical window helps to have a low cost device. The effects of channel dimensions, lengths and entrance angle of light on optical path length and losses were analyzed using both simulation and experimental tests. Using narrowband optical filter (100 nm bandwidth) helps to have a system with good CO2 selectivity. In addition, experimental tests with different channel dimensions and lengths covered a considerable range of CO2 concentration useful for medical and environmental applications. Finally, curve fitting was adopted for a modified Beer–Lambert law as a practical situation.

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Development of a carbon dioxide concentration meter using a solid electrolyte sensor

Cited by 6 publications

References 2 publications

The Relative Performance of NDIR-based Sensors in the Near Real-time Analysis of CO2 in Air

The Relative Performance of NDIR-based Sensors in the Near Real-time Analysis of CO2 in Air

Application of biosensors in smart packaging

Low cost and miniaturized NDIR system for CO₂ detection applications

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Development of a carbon dioxide concentration meter using a solid electrolyte sensor

Cited by 6 publications

References 2 publications

The Relative Performance of NDIR-based Sensors in the Near Real-time Analysis of CO2 in Air

The Relative Performance of NDIR-based Sensors in the Near Real-time Analysis of CO2 in Air

Application of biosensors in smart packaging

Low cost and miniaturized NDIR system for CO2 detection applications

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Product

Resources

About

Low cost and miniaturized NDIR system for CO₂ detection applications