Gas Detection 13 How can we identify natural gas leaks when hydrogen is added?


TBM and THT are the most commonly used odourants to make odourless natural gas smell, so that people realise there is a gas leak. However, control of these odorants is necessary to maintain their effectiveness. Only last year, Sensorix offered its electrochemical (EC) gas sensors for mercaptan and THT detection - Sensorix TBM 50 and Sensorix THT 100.


But due to various power to gas initiatives, more and more H2 with high-performance gas sensors and no H2


will be added to natural gas. For this reason, a gas measurement device interference is required. We are very pleased to confi rm that the Sensorix TBM 50 is


already suited for this application. To complete our respective range of sensors, we have developed the Sensorix THT 100 low H2 now offer a perfect solution for the detection of mercaptans and THT in natural gas with added H2


. The Sensorix TBM 50 detects mercaptans with zero cross sensitivity towards H2 , CO, H2 S, THT and is ready for use in H2 containing


natural gas (“power to gas”). The Sensorix TBM 50 gas sensor has excellent repeatability (standard deviation of sensitivity = 0.5 % for 10 consecutive measurements at 10 mg/m³ TBM). It also shows excellent baseline stability from -10 to 40°C and in changing humidity (<0.1 mg/m³) and its unbiased operation will increase battery life in your portable instrument.


The 3-electrode sensor, Sensorix THT 100 low H2 is suitable for power-to-gas applications because it has a very low H2 interference (THT signal only 1 mg/m3


interference and it requires 300 mV bias. All sensors are available in various standard formats - 4S, 7S, Mini, Classic, Smart, as well as in customer specifi c mechanical adaptations. More information online: ilmt.co/PL/R201 and ilmt.co/PL/Y0YY


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A novel methane optical gas imager for increased site safety and


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emission mitigation CI Systems recently introduced MetCam, a state-of-the-art Continuous Emissions Monitoring System (CEMS) that utilises Quantifying Optical Gas Imaging (QOGI) technology. MetCam is a fully integrated autonomous system designed for detecting, monitoring, and quantifying natural gas leaks, and is available for installation in hazardous locations (Zone 1, Class I Div. 1).


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MetCam’s innovative technology provides continuous monitoring of gas leaks and alerts users to the presence of hazardous clouds in real-time. With its ability to cover a large volume and detect even the smallest gas leaks, MetCam enables effective preventative maintenance operations to be conducted, minimising the risk of safety incidents and environmental impact. The system utilises advanced algorithms to minimise false alarms and operates reliably in demanding environments, ensuring accurate and reliable gas detection results.


MetCam is designed for installation in a wide range of natural gas facilities, including compression stations, natural gas skids, LNG gasifi cation/liquefaction facilities, fueling stations, and offshore applications. The system provides both visual and infrared video streams that can be displayed in the control room using the standard ONVIF interface, allowing for easy integration into existing monitoring systems. Additionally, MetCam offers industry-standard 4-20 mA output, enabling seamless integration into existing alarm systems for effi cient and effective gas leak detection.


One of the key advantages of MetCam is its reliability and maintenance-free operation. The system only requires periodic external cleaning to ensure peak performance, minimising downtime and maintenance costs for operators. With its advanced technology and innovative features, MetCam is set to become the go-to device for natural gas facilities looking to improve site safety, reduce fugitive emissions, and optimise their operations.


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Harnessing the power of landfi ll gas and biogas with precise and dependable gas sensor technology


Landfi ll gas (LFG) and Biogas are similar in creation process and composition – and for the fact of representing both a resource and a hazard, with appropriate monitoring and management tipping the balance between the two extremes.


N.E.T. high-volume IRNET sensors are the ideal fi t for Landfi ll gas (LFG) and Biogas applications due to: • 0…100% detection range for Methane (CH4


) and Carbon dioxide (CO2 )


• rugged stainless steel built and protective coatings to ensures resistance to the acid gases associated with the application • available in ATEX or IECEx certifi ed versions for maximum safety and use in classifi ed areas • our exclusive Dynamic Range technology ensures optimal performances and unprecedented accuracy


Biogas can be produced from various raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste while LFG is the product of anaerobic degradation of the organic fraction of solid urban waste within a Landfi ll. These gases are primarily methane (CH4


) and carbon dioxide (CO2 hydrogen sulphide (H2 ) – both of which are greenhouse gases – and may have small amounts of S), moisture and other volatile organic compounds (VOCs).


Capturing biogas and LFG avoids the release into the atmosphere of environmental-harmful compounds. In terms of global warming potential, methane is over 25 times more detrimental to the atmosphere than carbon dioxide. Landfi lls are esteemed to be the third largest source of methane in the US.


Because of the toxicity and fl ammability of these gases, monitoring techniques have been developed to decrease the risk involved. Detectors are used to measure methane as well as CO2


More and more instrument manufacturers around the industry are choosing our sensors for continuous monitoring systems and safety-related detectors.


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60401pr@reply-direct.com levels. Surface monitoring and sub-surface monitoring as well as monitoring of the ambient air is carried


out. In the U.S. it is mandatory that large landfi lls install gas collection and control systems, which means that at the very least the facilities must collect and fl are the gas.


in 20% hydrogen), has no H2 S cross , so we


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