air flow monitoring Articles

  • The all NEW TunnelTech 305 Air Flow Monitor

    With over 30 years’ experience in the tunnelling market, CODEL are excited to have recently launched the 6th generation single point flow monitor utilising the very latest ultrasonic technology. CODEL’s tunnel monitoring products simplify the challenge of sourcing, installing and maintaining a highly accurate and reliable tunnel monitoring solution. The TunnelTech 305 offers low ...


    By Codel International Ltd

  • Use of Mass Balances for the Determination of Oxygen Contribution of the Different Air Sources in a Full-Scale Membrane Bioreactor

    MBRs necessitate two sources of aeration: one for scouring the membranes (coarse bubble, CB) and the other for the biomass requirements (usually fine bubble, FB). In the framework of a in-depth study of a full scale municipal MBR plant (10 000 p.e.) where CB and FB are in the same tank (Biosep®), mass balances were used to determine the OTR of the different combinations of CB+FB at different air ...

  • 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.

  • Reduce energy costs with a compressed air flow meter

    Consider the following situation. You find out you have been using way too much water at home. You discover a leaking gasket and there is water all over your basement. What is your course of action? Of course, it is to fix the leak right away. But what if this happened at your plant? And instead of water, we are dealing with compressed air? Probably nothing, because compressed ...


    By VP Instruments

  • Experiences in the modelling of traffic policy measures for ambient air quality management in Lithuania

    This paper presents the application of the Integrated Transport Effect Modelling System (ITEMS) in the city of Kaunas, Lithuania, taking into consideration some factors such as existing vehicle fleet, traffic flows, and ambient air quality monitoring data. The objective of this study is to estimate the exhausts of CO, NOx, and SO2 released by motor vehicles in relation to predictive traffic ...


    By Inderscience Publishers

  • How To Make a Fan Performance Curve

    Fan Curve Development for Centrifugal Fan Applications The fan performance curve shows the pressure and flow rate that the fan will produce for any system connected to it. The actual fan performance is dependent upon the detail design of each system. System designers calculate process air requirements, and the fan application engineer selects fans to meet those requirements, which are ...


    By AirPro Fan & Blower Company

  • Newest and Best Update for DG-1000 Available Now!

    We are extremely pleased to announce the latest update to the DG-1000 Pressure and Flow Gauge and it is available now.  After each of the previous updates we heard from customers about features they would like to see in the DG-1000 as well as improvements of existing features.  In this release we have made the most significant upgrades to the DG-1000 since it was first introduced.  ...

  • Parametric study of the dispersion aspects in a street-canyon area

    Most modern cities practically consist of street canyons, making monitoring of the level of their pollution an important issue. In this study, a Computational Fluid Dynamics (CFD) simulation of pollutant dispersion was performed for a real, complex-geometry street canyon for various wind directions and speeds. Typical street-canyon effects – like the formation of a longitudinal vortex for wind ...


    By Inderscience Publishers

  • Area Monitoring: Diffusion Sampling

    Indoor and outdoor gas hazards that exist in open areas are usually monitored using diffusion-type sensors. A diffusion sensor has no active sample-drawing system; diffusion sensors rely on the ambient air movement and pressure to deliver the sample to the sensing element. Diffusion-type sensors are a reliable and cost-effective way to monitor open area gas hazards. When installing diffusion ...

  • Flow monitoring of cement in air slides - Case Study

    Client: Cement plant (Germany) Product: Cement Conveyed volumes:   50 - 80 t/h Conveyor mechanism: Pneumatic conveying system Installation location: Air slide after storage silo What measuring process was used ...


    By ENVEA

  • Metek Introduces the New Multi-Path Ultrasonic Anemometers

    Our news report about recent instrumentations or measurements of our customers which might be of special interest for other web site visitors. The reports are added on the fly whenever we have received such information. The experienced support is highly welcome and appreciated. Metek is proud to present the new members of the uSonic-family: The ultrasonic anemometers uSonic-3 Class A ...

  • 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 da-ta 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 ...

  • Microfiltration Pilot System, California

    INTRODUCTION In May 2013, Pure Aqua, Inc. successfully manufactured and supplied an microfiltration pilot system to a membrane manufacturer for Title 22 certification. Title 22 is the State of California’s stringent standard for treatment/disinfection of wastewater for non-potable reuse and ...


    By Pure Aqua, Inc.

  • Soil Air Permeability: Threshold Gradient and Anisotropy

    In this study, a triaxial confinement chamber and mass flow meter were used to measure the air permeability of compacted clayey sand specimens. Specimens were extracted at different angles with respect to the vertical direction to measure the anisotropy. The soil was compacted at high water contents below the optimum.At lower gradients, deviations from Darcy´s law were observed. Threshold ...


    By ASTM International

  • Effect of water addition on the exergy balances of an LPG fuelled spark ignition engine

    In this paper, we investigate the effect of water addition on the exergy balance of a conventional engine. The present work is an analytical study depending on experimental measurements. A four-cylinder, LPG fuelled SI engine is used in this work, and water injection through intake manifold is used for water addition. The cylinder pressure versus crank angle, and water, air and fuel flow rates ...


    By Inderscience Publishers

  • Facility reduces process downtime – Case Study

    A facilities subcontractor for Boeing required meters to monitor the make-up air mass flow rate into a painting facility. The make-up fans ensure compliance with OSHA and Boeing air quality standards by reducing contamination and airborne particles that result from over-spray. The Boeing standard dictates a minimum airflow of 125 SFPM to the paint booths. Should the airflow drop below this ...


    By Sierra Instruments, Inc.

  • Iron Ore Pelletizing Plants - Case Study

    Changing the iron ore processing chain The iron ore being mined globally can approximately be divided equally into boulders and fines. For further processing boulders have to be sized to 10-30 mm for blast furnaces and 6-18 mm for sponge iron plants. Iron ore in a finely ground state is not easily transported or readily processed .The iron ore pelletizing process agglomerates the fine ...

  • Monitoring Considerations for Critical Environment Cleanrooms

    Facilities grappling with USP797 and USP800 verify their compliance through cleanroom certification. Airflow measurements, leakage testing and environment measurements (differential pressure, temperate and relative humidity) are documented and certified. Non-cGMP certified facilities, do not generally have ongoing monitoring of their cleanroom space and have difficulties identifying when ...


    By AirCare Automation

  • Air and nitrogen flow measurement in controlled atmosphere (CA) room

    Transporting refrigerated perishable goods such as fruits and vegetables in Controlled Atmosphere (CA) is an economical solution for long distance shipments as well as long-term storage. The freshness of perishables is preserved by refrigeration and modification of the gas concentrations in CA rooms which provides reduced respiration (C6H12O6 + 6O2 à 6CO2 + 6H2O + Heat) of fruits and ...

  • In-Plane Air Flow Through Needle-Punched, Nonwoven Geotextiles Under Normal Loading

    Knowledge of the in-plane permeability of nonwoven geotextiles to air and other gases has important applications including, for example, the transport and collection of methane gas beneath landfill caps. The results of in-plane flow measurements of air through eight different needle-punched, nonwoven geotextiles are presented. Air flow was measured using a radial flow device under a range of ...


    By ASTM International

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