hydrogen sensor Articles

  • Hydrogen annealing ovens case study

    Application Moisture is measured in hydrogen annealing ovens. Problem Hydrogen gas is used in annealing furnaces manufacturing stainless steel and other metal parts. High-moisture concentrations in the hydrogen will oxidize the metal, resulting in an unusable product with a surface finish that is too dark. Equipment Any ...

  • Electronic transport across hydrogen bonds in organic electronics

    Hydrogen bonds (H–bonds) are relatively weak and result from non–covalent interactions. Despite their relatively low strength compared to other bonds of biochemical relevance, they play a vital role in determining the structure and function of biological molecules owing to their directionality and cooperativeness. This has led to an intense effort in harnessing the properties of these hydrogen ...


    By Inderscience Publishers

  • Developing Technologies to Detect Hydrogen Sulfide (H2S) Gas

    Abstract Hydrogen sulfi de (H2S) gas can cause nausea, headaches, unconsciousness, and death. Industries struggle to detect this deadly substance before it harms workers or communities. Safety system manufacturers have developed detectors that sense the H2S quickly and accurately. This paper illustrates, in general terms, considerations in effective placement of H2S detectors: ...

  • Detecting Hydrogen Gas and Fires: Seeing the Unseen

    Hydrogen usage is growing. The general public sees and reads about hydrogen as an alternative fuel for cars. However, the big use for hydrogen is found in hydrocarbon processing and other important manufacturing processes. Hydrogen is the first element on the periodic table and is an essential element in the manufacturing of many of our everyday products. We must have respect for its explosive ...

  • Hydrogen-cooled electric generators case study

    Application Moisture contamination is measured in the hydrogen gas used to cool large stationary electric generators. Problem Hydrogen is used to cool the bearings and other rotating parts of large stationary electric generators. Hydrogen is the best choice for a cooling gas because of its unique combination of high thermal conductivity and low viscosity. In ...

  • How can you measure Peracetic Acid separately from Hydrogen peroxide, Isn’t there hydrogen peroxide in PAA?

    We receive questions of this sort frequently and the questioner is partly right. Peracetic acid (PAA) is formed in an equilibrium mixture with hydrogen peroxide and acetic acid, so in a mixture of PAA, hydrogen peroxide and acetic acid, PAA is being continually formed by the reaction of hydrogen peroxide and acetic acid, and peracetic acid is continually breaking down to reform hydrogen peroxide ...


    By ChemDAQ, Inc.

  • Chronoamperometric–based detection of hydrogen peroxide using palladium nanoparticles

    Monodisperse palladium nanoparticles were used to develop a chronoamperometric–based sensor for the detection of hydrogen peroxide (H2O2). Thioether stabilised palladium nanoparticles with diameters of 1.8 nm, 2.0 nm and 3.0 nm were synthesised using a pyrolysis method. The palladium nanoparticles were immobilised on gold electrode ...


    By Inderscience Publishers

  • Danger and Detection of Hydrogen Sulphide Gas in Oil and Gas Exploration and Production

    A rig worker smells rotten eggs near the well head, rubs his itchy eyes as he investigates the frosty pipe connections. After a few moments, he believes all is fine as he no longer smells the tell-tale hydrogen sulphide odour. In this scenario, we can only hope the worker recognises the danger and quickly leaves the site. Oil fields, especially mature ones, can produce hydrogen sulphide gas ...

  • Electrochemical Sensors for Specific Gas PPM Monitoring

    Echem sensors are able to read a specific gas even when it is mixed in a background of other gases. Echem sensors are typically used to read very low PPM concentrations of toxic gases. The Echem sensor consists of a small cell holding an electrolytic solution. This solution needs a specific gas in order to produce an electrical signal. When the specific gas passes through a permeable membrane and ...

  • A sewer process model as planning and management tool – hydrogen sulfide simulation at catchment scale

    The collection system of a major city at the Persian Gulf was simulated for bulk water hydrogen sulfide and the release of sewer gas to the urban atmosphere. Geometry data on 870 km of sanitary sewer and data on dry weather flow entering all nodes in the catchment was exported from a Mike Urban database and imported to the sewer process model WATS. The process model then routed sewage and sewer ...


    By IWA Publishing

  • 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 ...

  • Safety Systems Depend on Reliable Field Sensors (Emphasis on Fire and Gas Detectors)

    Abstract Because not all hazards are the same, identifying and quantifying the hazard is the starting point in choosing sensing technology. Not all detectors are the same, and they should be selected according to their ability to detect the hazard. This paper gives a broad summary of technologies that provide users reliable responses to hazardous conditions, that minimise false ...

  • Characterisation of aseptic sterilisation processes using an electronic nose

    The present work describes the development of a multi–sensor system for the evaluation of aseptic sterilisation processes employing hydrogen peroxide vapour by means of an electronic nose. Microbiological count reduction tests with Bacillus atrophaeus spores have been carried out in order to characterise influencing factors of the sterilisation by hydrogen peroxide vapour, namely the hydrogen ...


    By Inderscience Publishers

  • Atomic cluster device research in New Zealand

    We review research in New Zealand on nano-electronic devices fabricated using atomic clusters as building blocks. Techniques described include those based on percolation, and on self (or directed) assembly in templates. The templates used are V-grooves etched into silicon wafers and lithographically defined patterns in PMMA on silicon. Both methods exploit the tendency, which is demonstrated by ...


    By Inderscience Publishers

  • Battery rooms

    The CustomerThis company is a leading global information services provider, meeting worldwide needs in the financial, education and business information markets. The company operates a high tech data center that houses all its computer systems and a batter}' backup system that is used to protect their computers in the event of power interruption or failure. The ...

  • Controoling chlorine costs

    The most widespread disinfectant used in the treatment of drinking water is chlorine, which can be applied in a variety of ways. History has taught us that, in bacteriological terms, chlorinating water is a proven way of disinfecting drinking water. After all, more than 75 years have passed since chlorine was used to disinfect drinking water for the first time. Many years of experience have shown ...


  • Automatic calibration saves big

    Automatic gas sensor calibration technology was developed by Rel-Tek and proven over a decade of industrial applications involving large alternative fuel, transit bus garages.  CNG, LNG, LPG and hydrogen fuels present the possibility of explosive gas buildup indoors, so sustaining the accuracy of the installed gas monitoring system is a never-ending responsibility for the owner.  ...


    By Rel-Tek Corporation

  • Continuous emission monitoring and control of packed tower odor control systems using the sycamore CEM

    ABSTRACT Packed-tower chemical scrubbers, with sodium hydroxide (caustic) and sodium hypochlorite (bleach), are commonly used to treat foul air from wastewater treatment processes. The available control mechanisms include a pH probe and controller for the sodium hydroxide feed, an oxidation reduction potential (ORP) probe with a controller toestablish the bleach feed, and proprietary ...

  • Analytical Technology Helps Britannia Food Ingredients Ensure Safe Wastewater Disposal

    Britannia Food Ingredients Ltd. is a speciality fats company for the chocolate, confectionery, biscuit and snack food industries. The company are specialists in providing the demanding fat formulations found within chocolate, ice cream, bakery and snack food products. Located at Goole, East Riding of Yorkshire, England, the business was formed in 1996 and produces a range of oils and fats ...

  • Chlorine Dioxide gas detection: A comprehensive guide

    Introduction Some years agoago, the bleaching process in the paper industry was changed from using Chlorine (Cl2) as bleaching agent to Chlorine dioxide (ClO2). This was a challenge forThis posed a major challenge to industrial hygienists, as there were no sensors or detectors available that were specific to Chlorine dioxide: There was no sensor technology for gas detectors available that ...

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