Gas Calibration Articles

  • A Tale of Two Thermals: Capillary & Immersible

    About: The Core Technology White Paper Series is a four part series detailing the flow technologies that allow Sierra to offer a flow solution for nearly any gas, liquid and steam application. Part 1 focuses on Sierra’s two types of thermal mass flow technologies for gas mass flow measurement and control—Capillary Thermal & Immersible Thermal. Part 2 will focus on our ...


    By Sierra Instruments, Inc.

  • Bringing precision to steel production - Case Study

    Aluminum and steel manufacturers use mass flow controllers to inject purification, stirring and shielding gases into their melting, casting and annealing processes. Precise, automated gas flow control reduces toxic emissions and material costs.  Final purification of aluminum is accomplished by bubbling a mixture of argon and chlorine gases through the molten metal. This process separates ...


    By Sierra Instruments, Inc.

  • Buying time in suspended animation - Case Study

    Imagine being suspended in time—having your metabolism slow, heart rate decrease, and temperature drop. For Dr. David Kraus, Sulfide Biologist at the University of Alabama, linearity and precision matters. Dr. Kraus and other scientists are discovering that by administering small amounts of H2S, they can buy time in suspended animation. In 2005, Dr. Kraus decided to take his experiments ...


    By Sierra Instruments, Inc.

  • Process gas mass flow controllers - An overview

    A mass How controller (MFC) is used 10 control the How of gases in a wide range of microelectronic processes. A well-designed MFC maintains a constant tlow within I percent of the full-scale flow, has a repeatability of 0.2 percent of full scale, and has a response time of 1 second to reach within 2 percent of the desired (command) flow, all of this is in response to any changes in command flow. ...


    By Sierra Instruments, Inc.

  • Primary Brine Purification

      Ceramic Membrane Brine Purification Solution (hereinafter called CBS Process) is a well- proven process which can guarantee to offer high quality, stable and reliable primary brine for a long-term and is also an advanced process option for chlor-alkali companies. CBS combines the ...


    By Jiangsu Jiuwu Hi-tech Co

  • Brine Filtration

    Edible Liquid Salt Purification Solution for high-quality edible liquid salt : The technology of ceramic membrane brine filtration is used for continuous brine purification without adding any flocculant and scale inhibitor. Self-developed and exclusively self-retained technology of ceramic ...


    By Jiangsu Jiuwu Hi-tech Co

  • Precautions for paint construction in winter

    Winter decoration paint coating construction: the construction process1. Remove dust and dirt from wood products and lines (wood base).2. Finish the burrs, hatchbacks and other defects on the surface of the wood base, and polish them with sand leather to make the edges and corners ...

  • Dust concentration measurement with ProSens - Case Study

    Application A food manufacturer refi nes dairy products. The dust-laden exhaust air created during the manufacturing process is extracted by suction and cleaned by industrial fi lter systems. With increasing abrasion of the fi lter elements, the dust content in the exhaust air may rise and lead to increased environmental pollution. The continuous dust measurement (mg/m3) is ...


    By ENVEA

  • Precision accuracy for Gas mixtures & blends - Case study

    Precision control and measurement accuracy are the key requirements for gas mixing and blending applications. Vögtlin’s thermal mass flow regulators permit both master-slave mixtures and gas mixtures with fixed percentage proportions. ...


    By iCenta Controls Ltd

  • Controlling gas atmospheres & Industrial gases - Case study

    Efficient control of gas atmospheres requires excellent measurement stability and a maximum level of automation. When controlled by a remote signal (eg CO2 gas sensor), Vögtlin’s thermal mass flow controllers offer a short reaction time and fast regulation for optimising control of gas atmospheres. Gas mixtures remain stable and adapt rapidly to new requirements. Benefit From The ...


    By iCenta Controls Ltd

  • Reliable leak measurement with real gas - Case study

    The ability to measure low flow rates with high accuracy and a short response time is important for successful leak measurement. With a turndown ratio of up to 1 : 100 and calibration with the actual gas, Voegtlin thermal mass flow meters offer exceptional accuracy over the entire measurement range. ...


    By iCenta Controls Ltd

  • Factors affecting the choice of VOC sensor

    VOCs (Volatile Organic Compounds) perform many vital roles as fuels, solvents, cleaners, feedstock, sterilants etc. However, they can be harmful to health and the environment, so it is often necessary to monitor their concentration. By definition, organic compounds contain the element carbon, and exhibit similar chemical properties, which is advantageous from a monitoring perspective. However, ...


    By Alphasense

  • Benefits of FTIR (Fourier Transform Infrared) in Emissions Monitoring

    In this article we will discuss the FTIR technology, and the benefits of having an FTIR emissions monitoring system. We will also look at the process of what needs to be taken into account before purchasing an emissions ...


    By Gasmet Technologies Oy

  • Odorous compounds monitoring, olfactometry, human noses? Which option should you choose?

    Odors are very distinct air contaminants as they generate nuisances and can affect nearby residents. The factors playing a role in the determination of odor annoyance are: odor concentration and intensity, frequency, appreciation, duration and location. Several solutions are available as sensory approach (dynamic olfactometry), sensor technologies (portable sensors, electronic noses, etc.). In ...


    By Chromatotec Group

  • Determining Concrete Maturity with Temperature Monitoring

    Thermocouple Data Loggers Save Time & Improve Safety Concrete maturity is a measure of how much a batch of freshly poured concrete has cured. It is a quick indicator of the in-place strength at that point in time relative to the ultimate strength when the concrete is fully cured. Traditional measurements of concrete strength rely on compression tests such as made in a lab on field cured ...


    By CAS DataLoggers

  • Fire Investigator`s Kit

    To assist the fire investigator, maximise their ‘productivity’ and minimise the number of lab samples that need to be taken, a number of useful accessories and spares should be provided:- Long, flexible probe, to enable access to awkward spaces and gaps between floorboards and ceilings Vehicle adaptor to keep the rechargeable battery topped up plus AA battery pack for ...


    By Ion Science Ltd.

  • Ease of Calibration & Maintenance

    Conventional PIDs may use humidity suppression/compensation techniques but each of them has disadvantages: Humidity sensor – these typically have a slower response than the PID sensor itself which causes a drifting compensation Desiccant tube – these both slow the PID response and also reduce it by adsorption plus they need replacing from time to time which adds cost ...


    By Ion Science Ltd.

  • Solving the Problem of Humidity

    Conventional PIDs may use humidity suppression/compensation techniques but each of them has disadvantages: Humidity sensor – these typically have a slower response than the PID sensor itself which ...


    By Ion Science Ltd.

  • Turning Science Fiction into Reality

    Precision measurement of low flow in gas mixing applications ...


    By Sierra Instruments, Inc.

  • Analox’s partner has more than one solution for you

    Analox has been working with the 7Solutions Group to provide customised gas detection and measuring services across a wide range of industries. 7Solutions is distributor and manufacturer of gas detection instruments and operates in 26 countries within the  ...


    By Analox Sensor Technology

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