oxygen monitoring control Articles

  • Monitoring of Hydrogen Sulfide in Industrial Processes

    Hydrogen sulfide, H2S, is a very poisonous, corrosive, and flammable gas. As such, it needs to be carefully monitored and controlled in industrial processes where it is generated or used. At relatively low concentrations, it has an odour of rotten eggs which effectively works as a warning, but at higher concentrations where it becomes acutely toxic and even lethal, it can no longer be smelled ...


    By Opsis AB

  • Oxygen Monitors for the New Millennium

    Oxygen monitors have become a required piece of safety equipment for many industrial and laboratory environments, where the release of certain toxics can create an area unsafe for living beings (human or animal).  When making a purchasing decision on any oxygen detection monitor, one need look no further than the sensor cell found at the heart of the monitor.  While each oxygen ...

  • Operating Principle of an Oxygen Monitor

    The oxygen concentration in the flue gas of a combustion process such as that of a power plant or a waste incinerator gives a good indication of the efficiency of the combustion process. The parameter is therefore of great interest to optimize fuel economy, but also to control and reduce emissions of air pollutants. An ideal combustion process only results in CO2 and water, but ...


    By Opsis AB

  • Boiler Dissolved Oxygen Control

    DISSOLVED OXYGEN CHEMISTRY Dissolved Oxygen (DO) is a measure of the amount of oxygen, usually thought of as a gas, that is dissolved in a liquid such as water. Oxygen is essential to life and is also the most common element found taking part in corrosion reactions. DO can be thought of as the fuel needed for the corrosion process to proceed. It is the corrosion reactions that necessitate ...


    By IC Controls Ltd.

  • Oxygen Monitor for FOUPs in Semiconductors and Cleanrooms

    Over time, the contamination control requirements in the semiconductor industry have become more stringent. Employees now must spend more time adhering to cleaning protocols to preserve the sanitary nature of the environment and comply with regulations. The front-end unified pod (or FOUP) began appearing in semiconductors in the 1990s, serving as a transportation box to safely and ...

  • Air Separation Plants and the Use of Oxygen Monitors

    Air separation plants are critical for many different industries, from clean energy to manufacturing. Nowadays, cryogenic is the most common type of distillation used to separate air into its component gases - nitrogen, oxygen, and inert gases including helium and argon. If your industry relies on air separation for product development or manufacturing, then knowing how the process works is ...

  • Condenser performance monitoring, control and optimization

    Abstract During the past sixteen years, understanding of the condensation process within condensers has been advanced through the introduction of new monitoring and control instrumentation. Data gathered from a variety of condenser types employing these instruments have allowed comprehension of the condensation process to be advanced to the point where underperforming regions of tube ...


    By Intek, Inc.

  • Continuous Oxygen Monitor Detects Leaks in Nitrogen Dewar Storage

    Extremely low maintenance oxygen (O2) monitor designed to continuously monitor confined spaces for low oxygen levels available from PureAire Oxygen Monitors. PureAire Oxygen Monitor is suitable in all environments containing nitrogen, helium, argon, or any cryogenic gases. PureAire is unaffected by temperature, humidity, barometric pressure, or any environmental changes. The instrument displays ...

  • Cyanobacteria successfully monitored and controlled by using ultrasound

    Cyanobacteria- also known as blue-green algae- cause problems when blooming in lakes, ponds and reservoirs. Mainly due to the production of toxins, cyanobacteria cause fish kill and the death of other aquatic animals. They also affect human beings, causing paralysis and skin irritation, and they are even thought to be related to the occurrence of liver cancer. In drinking water reservoirs, the ...


    By LG Sonic

  • 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.

  • Monitoring oxygen levels for personnel safety in food packaging facility - Case Study

    Ghanim International have installed three EC96 oxygen deficiency monitors to monitor the oxygen levels at their manufacturing facility. Ghanim International UK Ltd, a subsidiary of Brunei Wafirah Holdings, was established in August 2011. Currently they manufacture their own label products from a production site in Birmingham but aim to acquire their own abattoirs and poultry ...


    By Systech Instruments Ltd

  • 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 ...

  • ppb Dissolved oxygen measurement

    Dissolved oxygen (D.O.) measurement is one indicator of water quality because oxygen is a common element contributing to corrosion reactions. This corrosion reaction provides the need for low level D.O. control since dissolved oxygen is responsible for costly replacement of piping and equipment by corrosive attack on metah. what is Dissolved Oxygen? Dissolved axygan (D.O.f is the ...


    By IC Controls Ltd.

  • ppm Dissolved oxygen measurement

    Dissolved oxygen (D.O.) levels are used as a general indicator of water quality. Oxygen is essential to life and vital for countless aquatic forms. D.O. level control is critical in numerous applications ranging from the monitoring of industrial waste water to environmental surveillance. What is Dissolved Oxygen? Dissolved oxygen (D.O.) is the amount of oxygen gas dissolved in a ...


    By IC Controls Ltd.

  • Monitoring the variations of the oxygen transfer rate in a full scale membrane bioreactor using daily mass balances

    Oxygen transfer in biological wastewater treatment processes with high sludge concentration, such as membrane bioreactor (MBR), is an important issue. The variation of α-factor versus mixed liquor suspended solids (MLSS) concentration was investigated in a full scale MBR plant under process conditions, using mass balances. Exhaustive data from the Supervisory Control And Data Acquisition (SCADA) ...


    By IWA Publishing

  • Room Oxygen Sensors in Italian Laboratories

    New Guidelines for the storage of nitrogen have been established in Italy which highlight changes to oxygen monitoring procedures. ...


    By Analox Sensor Technology

  • Comparing Performance of Dissolved Oxygen Probes and Examining Payback of the RDO PRO Probe Used to Monitor Aeration Basins

    Introduction Wastewater Treatment Plants (WWTPs) can use reliable dissolved oxygen (DO) data to improve operations, especially with continuous DO monitoring and realtime data acquisition. When DO probes and controllers are connected to blower controls through a SCADA system, the Publicly Owned Treatment Works (POTW) or WWTP will be able to: Optimize sewage treatment ...


    By In-Situ, Inc.

  • Use of online nutrient monitoring for automatic aeration and nitrate recycle pump control

    The Northside Wastewater Treatment Plant (WWTP) in Kinston, NC was expanded and upgraded in 2006 for biological nutrient removal (BNR) to meet limits of 3 mg/L total nitrogen (TN) and 1 mg/L total phosphorus (TP). In addition to the traditional approach of controlling the blowers based on dissolved oxygen (DO) readings, the City decided to implement an aeration basin blower control system using ...

  • Reduced order model monitoring and control of a membrane bioreactor system via delayed measurements

    Activated sludge treatment is one of the most widely used processes for wastewater treatment (WWT). These systems are built with sufficient design margin to allow changes in loading and process conditions. This is necessary and prudent to overcome limitations in measurement, monitoring and controlling of WWT process parameters at the desired frequency. Online sensors for mixed liquor suspended ...


    By IWA Publishing

  • Monitoring and control of a partially packed biological aerated filter (BAF) reactor for improving nitrogen removal efficiency

    This paper examines on-off systems and automatic monitoring and control of a biological aerated filter to identify the end point of nitrification and denitrification processes, and chemical oxygen demand (COD), ammonia-nitrogen removal (NH3-N) and aeration savings. Oxidation-reduction potential (ORP), pH and dissolved oxygen (DO) were measured on-line and chemical parameters were measured in the ...


    By IWA Publishing

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