International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 02 | Feb 2024
p-ISSN: 2395-0072
www.irjet.net
PORTABLE MULTI GAS ANALYSER KANURI UDAYA SHANKAR1, DONARUN DAS 2 Temple Adventures, Puducherry,I ndia ---------------------------------------------------------------------***-------------------------------------------------------------------Abstract - The main objective of this research and 2. EXISTING SOLUTION development project is to create a highly efficient and costeffective device capable of monitoring the composition of gasses in a scuba diving air tank. The importance of this device cannot be overstated, as it plays a crucial role in ensuring the safety and well-being of divers during their dives. With multiple gasses present in the tank, it is essential to accurately measure their proportion and concentration in the air tank.. To achieve this goal, we have carefully selected a range of sensitive and precise sensors that are integrated with a 32-bit microcontroller. This combination allows for continuous data collection and monitoring of various parameters, including oxygen percentage, carbon dioxide and carbon monoxide concentrations in parts per million (ppm), volatile organic compound (VOC) index in points, temperature in Celsius, humidity percentage, and pressure levels in bar/psi. The collected data is then displayed on a high-resolution TFT LCD screen, providing real-time updates and alerts for any changes in gas levels. To ensure uninterrupted operation, the device is powered by a lithium polymer battery charged by a specialized module with current protection. Every detail has been meticulously designed and implemented to offer accurate readings and optimal functionality for divers' safety and peace of mind.
When it comes to detecting gasses and collecting data from Scuba diving air tanks, there are several sensor technologies for detecting gasses and collecting data. These advanced tools are especially useful in Scuba diving, allowing divers to monitor the contents of their air tanks with precision and accuracy.From laser-based spectrometry to electrochemical sensors,these devices offer a range of methods for detecting different types of gasses in underwater environments. With the aid of these innovative tools, divers can safely explore the depths of the ocean while ensuring the quality and safety of their breathing air.
2.1 Fourier Spectroscopy
The complex mixture of gasses is expertly separated into its individual components through the use of GC analysers for precise analysis. With remarkable sensitivity and accuracy, a multitude of gasses can be sequentially measured using a variety of columns and detectors, revealing their unique properties and proportions. This advanced technology allows for a thorough understanding of gas mixtures, providing valuable insights for various industries and research fields.
The multi-gas analyser, also known as a gas monitor or gas detector, was an advanced instrument designed to measure and track the levels of multiple gasses in an air tank simultaneously. Its complex system was specifically calibrated to accurately detect and monitor the concentration of oxygen, carbon dioxide, carbon monoxide, temperature, humidity, pressure, and volatile organic compounds (VOCs) in real-time. Despite its superior capabilities, this state-of-the-art in-line multi-gas analyser boasted a surprisingly affordable price when compared to other models on the market.
Impact Factor value: 8.226
(FTIR)
2.2 Gas Chromatography (GC)
1.INTRODUCTION
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Infrared
FTIR analyzers utilize the power of infrared light absorption to meticulously examine various gas molecules, enabling simultaneous testing of multiple gasses. With advanced technology, these analyzers provide constant, real-time monitoring of gasses at incredibly low levels, with precision down to parts-per-billion (ppb) or even parts-per-million (ppm). This capability is unmatched and vital in industries where gas levels must be closely monitored for safety and efficiency.
Key Words: Multi gas analyser, Oxygen, carbon dioxide and carbon monoxide, volatile organic compound (VOC), temperature, Humidity, Tank pressure, Sensor unit, Micro controller, TFT LCD Display, lithium polymer battery, battery charging unit.
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Transform
2.3 Photoacoustic Spectroscopy (PAS) The revolutionary photoacoustic effect is harnessed by PAS analysers to precisely identify and measure gasses. These advanced instruments are able to detect the subtle changes in sound waves that occur when gas molecules absorb modulated light, allowing for unparalleled
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