volumetric air flow measurement Articles

  • Minute Flow Tip Video - Mass Flow Versus Volumetric Flow Technology

    When engineers and systems integrators need to measure gas flow rate in an industrial process or scientific research, there are many types of technologies to choose from.  This makes selecting the right gas flow meter a challenge. In addition to technology, engineers must consider many other parameters: price for value, cost of ownership, size of footprint, ...


    By Sierra Instruments, Inc.

  • [Minute Flow Tip Video] Mass Flow Versus Volumetric Flow Technology

    When engineers and systems integrators need to measure gas flow rate in an industrial process or scientific research, there are many types of technologies to choose from.  This makes selecting the right gas flow meter a challenge. In addition to technology, engineers must consider many other parameters: price for value, cost of ownership, size of footprint, ...


    By Sierra Instruments, Inc.

  • Direct Mass Flow or Volumetric: The Thermal Flow Meter Technology Advantage!

    In today’s world where everyone is watching the bottom line, you need high performance, cost-effective instrumentation—and capillary thermal mass flow meters and controllers have been proven to meet this criteria in a wide range of process applications. Thermal mass flow technology is an industry standard for mass flow control of gases because it measures flow directly, at the ...


    By Sierra Instruments, Inc.

  • Smart compressed air measurement - Case Study

    Air may be free, but compressed air certainly isn’t. Every day, leaks and inefficient compressors cost companies money and lead to more electricity usage. As air  compressors churn away 24/7, endlessly maintaining the air pressure in compressed air distribution lines, dollars leak away from the bottom line. Measuring compressed air can be a big challenge. In many manufacturing ...


    By Sierra Instruments, Inc.

  • Optimizing air flows to aeration basins – Case Study

    As a result of clean energy mandates and the rising cost of energy, wastewater treatment facilities around the country are retrofitting their instrumentation to run highly efficient, cost-effective, clean facilities. To reduce emissions and produce clean energy, solid wastes are often digested in large digester tanks to reduce the volume of waste (sludge) and produce more biogas, which is then ...


    By Sierra Instruments, Inc.

  • The Need to Clearly State the Reference Temperature and Pressure Conditions when Reporting Gas Volumes or Volumetric Flow Rates

    In the physical sciences, such as chemistry, the standard temperature and pressure (STP) is a set of conditions for experimental measurements that enables true comparisons between sets of data representing gas volumes. There are many different definitions of standard temperatures and pressures applicable to gas volumes and volumetric flow rates. The differences depend on the organization defining ...


    By F&J SPECIALTY PRODUCTS, INC.

  • A numerical evaluation of thermal performance of double flow packed bed solar air heaters

    In this paper, double flow packed bed solar air heater was investigated theoretically and experimentally. A numerical model for the air heater was presented. Numerical calculations had been performed under Hamirpur (latitude, 31°25' to 31°52' North) prevailing weather conditions. A mathematical models based on the volumetric heat transfer coefficient have been developed. To solve this model and ...


    By Inderscience Publishers

  • The Fundamentals of the Air Sampler Calibration-Verification Process

    INTRODUCTION The calibration of an air sampling instrument using a reference air flow calibrator requires attention to scientific detail in order to establish that the instrument’s reported values are correctly stated and valid under the actual operating conditions of the air sampling instrument. DEFINITIONS For the purposes of this ...

  • Air usage data increases company profit - Case Study

    A large American container company required mass flow meters on their air compressor lines to help evaluate the efficiency of blow mold machines in their plant. The manufacturer melts PET chips and extrudes them through blow mold machines to produce plastic bottles for the beverage industry. Plant engineers need data on compressed air usage to help them reduce utility and production costs. Four ...


    By Sierra Instruments, Inc.

  • How can I test the accuracy of my volumetric glassware?

    A huge range of tests in the laboratory require the use of volumetric glassware such as bulb or volumetric pipettes, volumetric flasks, ...


    By Camlab Limited

  • Refinery tracks down costly air leaks – Case Study

    A refinery recently installed two new air compressors in their plant and specified two mass flow meters to measure utility air use and dry instrument air mass flow rate as well as total plant output. Their principal objective was to monitor increased air usage or temperature changes that might indicate a leak…a costly proposition. SIERRA’S SOLUTION The plant engineers ...


    By Sierra Instruments, Inc.

  • VIDEO: Mass Flow Meters for Power Plant Applications

    Generating electricity in a natural gas power plant is a complex process due to the multiple steps involved with the different types of fluids being used and optimized. Dr. John Olin, Founder of Sierra Instruments, explains how thermal mass flow meters, vortex flow meters, and ultrasonic flow meters can improve the flow energy management in power plant ...


    By Sierra Instruments, Inc.

  • Bunker disputes avoided by using coriolis meters - Case study

    Coriolis meters are being used in the shipping industry to give true volume of fuel being delivered and to avoid bunker disputes due to aeration of fuel, known as the ‘Cappuccino’ effect MORE INFORMATION Fuel suppliers sometimes introduce air intentionally into marine fuel during ...


    By iCenta Controls Ltd

  • Ventilation Research on Australian Residential Construction

    This paper applies established and new testing methods to discover the ventilation performance of various residential building envelope constructions in Australia. Under the definition of 'ventilation performance' we imply the building envelope leakage (or infiltration) of the living space air change rates, the volumetric flow rates and the pathways of air flow between subfloor, living and roof ...

  • Comparative Evaluation of Test Methods for Reciprocating Engines; EPA Reference Methods vs. Portable Analyzer

    Abstract This is a comparative evaluation of errors in testing engines using reference methods and portable analyzers. New Mexico Environment Department (NMED) Air Quality Bureau has published a guidance document, Standard Operating Procedure (SOP), Use of Portable Analyzers in Performance Tests. EPA provides guidance on reference method testing in 40 CFR 60, Appendix A. This document is ...


    By Trinity Consultants

  • Process intensification in wastewater treatment: oxygen transfer characterisation of a jet loop reactor for aerobic biological wastewater treatment

    The overall volumetric mass transfer coefficient (KLa) and the overall gas holdup (ε) were measured in a jet loop reactor (JLR) used for the intensive aerobic biological treatment of waste water. The process parameters and their ranges were: inlet water flow rate: 30 &#le; QL &#le; 70 l/min, inlet air flow rate: 4 &#le; Qg &#le; 36 l/min. The ratio of water flow rates from ...


    By Inderscience Publishers

  • Glass manufacturer controls gas ratios - Case Study

    For a specialty glass manufacturer that constructs high-quality glass containers for the pharmaceutical and analytical industry, manual control of air and natural gas flow to the burner tip had resulted in unacceptable levels of rejected material, as well as excessive gas consumption. The process engineers were seeking methods to improve glass quality, reduce raw material waste, and increase ...


    By Sierra Instruments, Inc.

  • Reducing the threat of carbon soot – Case Study

    The U.S. government now recognizes that black carbon soot is the number two cause of climate change and the most important component of air pollution affecting our public health. This soot, caused mainly by the burning of fossil fuels and firewood, is often found in huge smog-like plumes known as "atmospheric brown clouds." According to a report commissioned by the U.N. Environment Program, this ...


    By Sierra Instruments, Inc.

  • What`s the Best Air Pollution Control Technology for My Process?

    Air pollution control equipment is not something that business owners address by saying, “Let’s do the right thing for the environment and install an oxidizer!” In fact, the scenario is more likely to be “We need to increase productivity (always a good thing!), but that will put us over our annual emissions limits. Do we know what we will need? Where do we start? Who can ...

  • Ancient process meets the future - Case Study

    Food, beverage and pharmaceutical industries requiring the regulation of air and gas flows have historically faced the challenge of obtaining highly accurate measurements in rugged factory environments. Within the last two decades, thermal mass flow controllers have overcome the shortcomings of volumetric approaches and demonstrated precise accuracy. With the advent of industrial gas mass flow ...


    By Sierra Instruments, Inc.

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