dual gas detection Articles

  • Oil & Gas Leakage Detection Contractors

    RADS (Remote Aerial Detection Systems) teamed with market leading vendors to supply state-of-the-art Intelligence Surveillance and Reconnaissance (ISR) and security equipment. RADS is a US-based top-tier Technology Integrator that serves international commercial and government customers across the world. Unlike the large US defense contractors, RADS is independent and can operate with agility ...


  • Two Detector Solution to Analyzing Sulfur

    Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...


    By Restek Corporation

  • PureAire Combines Oxygen and CO2 Sensors to provide a Dual Gas Monitor to the Marketplace

    As a recognized leader in O2 safety monitoring, PureAire recently explored the need for an O2 monitor where carbon dioxide is used. There are four key cryogenic gases; nitrogen, helium, argon, and carbon dioxide (CO2), which can create an oxygen deficient atmosphere. Material Safety Data Sheets (MSDS) covering cryogenic gases cite that a cryogenic leak can create an unsafe ...

  • Detection and measurement of GWGs in semiconductor fab facilities

    Problem Statement Various processes and tools in the modern wafer fab plant produce effluent streams that contain unacceptably high levels of perfluorocarbon GWGs (greenhouse warming gases). These effluent streams are abated by plasma incineration and wet scrubbers and other techniques. It is necessary to measure the destruction removal efficiency (DRE) of the various abatement methods ...


    By CIC Photonics, Inc.

  • Monitoring flammable gas in boiler houses

    The most common fuels in use for space and water heating are Oil, Natural Gas and Liquid Petroleum Gas (LPG). By far the most popular, clean and cost effective solutions are utilising Natural Gas or LPG. The traditional safety measure derived from the time of oil fired boiler houses is the use of a fusible link placed above the each boiler. The fusible link is intended to melt if it becomes ...

  • Analysis of Natural Gas Products by GC / TCD / FID

    The complex mixture of condensible hydrocarbons and permanent gases in a natural gas product has historically been separated on gas chromatographs equipped with dual columns and a switching valve. The light gases are separated from heavier compounds on a molecular sieve column, which is then backflushed onto a suitable column to separating the rest of the mixture. The Buck Scientific Model 910 ...


    By Buck Scientific Inc

  • Upgrading from Pellistor Gas Sensors to Infrared Technology

    In this article Andy Avenell, Crowcon’s Fixed Systems Product Manager, considers the shift towards infrared (IR) gas sensor technology in the oil and gas industry. Abstract Flammable gases and vapours can present considerable dangers in many industrial applications, none more so than the processes involved in extracting, transporting and processing oil and gas. Fast and reliable ...

  • Gas Monitoring for Ventilation Control and Energy Management

    The growing demand for underground and enclosed parking and maintenance garages (resulting from limitations on land availability) has increased the awareness and need for proper ventilation and control systems. In addition, increased health and safety programs have only added to the concerns of toxic and combustible gases in confined or enclosed spaces. Historically, ventilation and make-up air ...


    By Arjay Engineering Ltd.

  • IR Gas Detector Provides Rapid Response

    The advanced Model IR400 Point IR Combustible Gas Detector from General Monitors features an industry-leading three-second T90 response time to the presence of combustible hydrocarbon-based gases, which allows plant operators to respond quickly to gas leaks and ...


    By General Monitors

  • Not All Hazards are the Same: Design considerations for matching flame and gas hazards to detector technologies

    Not all flame and gas hazards in facilities are the same, therefore the detection technology chosen should be specific to the type of hazard to be detected. How do users select technologies to see certain fires or detect certain gases? The intent of this paper is to give a broad introduction to the selection and use of flame and gas detector technologies. We will answer questions such as these: ...

  • High temperature operation In(Ga)As quantum dot infrared photodetector focal plane arrays passivated with 6.5 nm–thick Al
    2
    O
    3
    layer

    Quantum dot infrared photodetectors (QDIPs) have been shown to be a key technology in broad infrared wavelength (3-12 µm) detection due to their potential for normal incidence operation, low dark current density and higher temperature operation. In our research, we have been investigating infrared detectors based on intersubband transitions in a novel InAs/In0.15Ga ...


    By Inderscience Publishers

  • Performance and mechanism of anaerobic biotrickling filter for removal of sulfite, sulfate, and hydrosulfite

    A biotrickling filter (BTF) was designed for removal of sulfite (SO32−), sulfate (SO42−), and hydrosulfite (HSO−3) produced from flue gas adsorbent during dual-alkali flue gas desulfurization. With an SO32− concentration of 0.89 g-S/(L packing), BTF could completely remove SO32− within 3 h with an ...


    By IWA Publishing

  • Is your Plant as tight as you think? Leak Detector for extremely toxic Gases, a Field Test Report

    Leak detection of commodity gases in chemical plants is a day-to-day practice. The sensor technology available for this application is field proven and reliable. No question about it, existing sensors will do the job. However, in plants manufacturing or handling extremely toxic substances, the picture is different. For example, take phosgene. The existing sensor technology for leak detection ...

  • MCM’s heated Silicon Sensor Moisture Analyser against Aluminium Oxide and Oscillating Crystal Moisture Analysers, during Molecular Sieve Test Runs at St Fergus, Scotland

    Abstract Methods for dehydrating natural gas using molecular sieves (mol sieve) are well established. Many strategies have been developed with the intention of extending mol sieve lifetime and preventing unplanned shut-downs of dehydration units. The amount of adsorbent required in such dehydration processes is determined by the water content in the feed, the end-of-run (EOR) water ...

  • Flow measurement technology comparison: GA5000 Vs Hot Wire Anemometer

    A typical landfill or contaminated land site under investigation will comprise of a suitable number of gas monitoring wells, with a planned series of monitoring visits.  The monitoring will include gas flow measurements, which together with methane and carbon dioxide concentrations will be used to calculate gas screening values (GSV) and hence allow the determination of whether any gas ...


    By Geotech

  • EEI`s Efforts in Helping to Re-build Hurricanes Katrina & Rita Affected Zones

    Untitled Document Dear Environmental Professionals, Hurricanes Katrina & Rita ...


    By Enviro-Equipment, Inc.

  • When Speed and Accuracy Count: Enwave Houston and Oklahoma City Successfully Deploy Sahara Tool for Leak Inspection Projects in Record Time

    Sahara technology is winning accolades from satisfied owners and operators of buried infrastructure the world over. In North America, two recent projects demonstrate the benefits of using this in-line tethered tool for critical leak detection surveys, especially when speed and accuracy are paramount. ...


    By Pure Technologies

  • Engineered wetland removes subsurface hydrocarbons while providing beneficial reuse

    British Petroleum (BP) is operating an engineered wetland to treat petroleum-contaminated groundwater at a 300-acre site in Casper, WY. Release of petroleum products during refinery operations from 1908 until 1991 resulted in significant petroleum hydrocarbon contamination. Over 44,000 yd3 of LNAPL were removed by dual-phase recovery wells and oil/water separators constructed in 1981, but ...

  • Predictive maintenance made safer and more affordable with Rugged tablets - Case Study

    Challenge Create a safer, more cost-effective predictive maintenance solution that survives in challenging industrial environments. Solution Build a modular, BT-enabled system using data acquisition hardware and rugged data collection tablets. Result A more sustainable instrument that lowers costs for ...


    By Handheld UK and Ireland Ltd

  • Spiral-Wound Elements for Potable Water Treatment

    Introduction Any new technology must overcome perceptions of the marketplace, which are not accurate. As a technology moves into new areas of application, new misconceptions also arise. Crossflow membrane technology is no exception. The first man-made, pressure-driven 'crossflow' membranes were made in flat sheet form. This membrane had to be configured in a device, and was first made in ...


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