Acoustic Monitoring Articles

  • Affinity Water: Multiscan, Aquascan 620L and Aquascope 3 Join Forces to Pinpoint a Quiet Leak on a Plastic Supply Pipe - Case Study

    In late February 2020, Leakage Engineers at Affinity Water were tasked with locating the source of a visible leak in the High Street of a small village in Hertfordshire.  On the face of it, it seemed like a straightforward problem to fix, but excavations at the site revealed only that the water was escaping from a redundant gas main and that the leak location could be much further away. A ...


    By Gutermann AG

  • Spectrovisc Q3000 Series Viscometer – A Portable Kinematic Oil Analysis Solution for Field-Based Users

    1. Traditional Viscometer Theory and Design Current viscosity measurement techniques rely heavily on the use of capillary, cone and plate, and concentric cylinder viscometers. These devices are mainly limited to the laboratory setting and contain obstacles to portability. While the capillary viscometer suffers from difficult and lengthy procedures for calibration, cleaning, and temperature ...


    By Spectro Scientific

  • Regulation driving change in leak detection

    Pressure on water companies to cut leakage over the next five years has accelerated new ways of thinking, with the sector increasingly turning to innovation and embracing the digital revolution, writes Barbara Hathaway, Vice President, Engineering, Servelec Technologies. The need for water companies to drive down leakage has never been greater, with unprecedented challenges and increasing ...

  • Doel Power Station - Case Study

    Location: Belgium Project Date: 1996 Project: Doel Nuclear Power Plant Product: Spa Species: Herring and Sprat Electrabel approached Fish Guidance Systems Ltd in 1996 to help reduce the numbers of fish ...

  • Ultrasonic Hull Inspections: How to Find the Right Equipment

    Hull inspections keep crew, ship, and cargo safe at sea. Not only is it plain good sense to periodically ensure the seaworthiness of any vessel, but it can also be required by law for ships registered in the U.S. and other countries. Hull inspections can be conducted visually in some cases, but for the best results, ship owners rely on nondestructive testing. Marine nondestructive testing, such ...


    By Zetec, Inc

  • Using the Total Focusing Method Algorithm to Enhance PAUT Imaging

    Companies depend on phased array ultrasonic testing (PAUT) to inspect their assets and equipment for signs of deterioration and damage. PAUT uses acoustic waves to measure the interiors of solid objects, including metals and composites. Fast, effective, and dependable, PAUT improves on conventional ultrasonic methods by using an array of transmitters and receivers. This allows technicians to scan ...


    By Zetec, Inc

  • Gold Detector MWF Spark Long-range Locator

    Spark Long Range Gold DetectorDst Detectors Technology For Metal And Water DetectionThe Gold Spark detector has succeeded and proved its worth in many countries and won the title of the best and smallest long-range sensor for detecting gold, metals, and spaces. System working deviceThis system of gold and metal detectors works to detect and sense targets from a long-range ...


    By DST Detectors

  • Drones reveal earthquake hazards hidden in the abyss

    There is no force on Earth quite like a subduction zone. Slips along these faults, found where plates of dense ocean crust dive beneath continents, cause the world's most destructive earthquakes and tsunamis: 1964 in Alaska; 2004 in Indonesia; 2011 in Japan. But much remains unknown about how those faults slip and stick between catastrophes. The radio signals of GPS, so powerful for tracking ...

  • Isolating Energy in the Wind Tunnel

    Wind tunnels, used for aerodynamic and acoustic testing in the automotive and aerospace industries, use one or more electrically driven fans to push or pull air through a test section. Air will either recirculate through a closed loop or be drawn in from the surroundings from one end of the tunnel and exhausted out the opposite end. Around the wind tunnel, there are several full body access ...


    By Kirk Key Interlock Company

  • Comparing Nondestructive Testing Methods for Welding

    One of the most common uses of nondestructive testing (NDT) is the examination of weld integrity. This is because welds are extraordinarily common in critical industrial applications across the world. The ability to inspect welds nondestructively is essential, as destroying one for testing necessitates replacing it with a new, untested weld. As such, there has been significant technological ...


    By Zetec, Inc

  • What are the applications for niobium products?

    Niobium product is dominated by its use as additive to high strength low alloy steel and stainless steel for oil and gas pipelines, car and truck bodies, architectural requirements, tool steels, ships hulls, railroad tracks. However, there are many other applications for niobium metal and compounds. Niobium product application & ...


    By Edgetech Industries LLC

  • Orthogonal and non-orthogonal sonic anemometers compared

    1. Introduction The performance of non-orthogonal sonic anemometers has been the subject of much discussion in recent years. It followed findings that they underestimated vertical winds and vertical heat fluxes by 10-15%. For agricultural and forestry scientists who depended on them for their large-scale energy balance studies this was a bad surprise. They had collected turbulence data ...

  • City of Park City – Utah, USA - Case Study

    In order to better understand the condition of their buried pipeline network and proactively address potential water loss issues, the city of Park City, Utah engaged Xylem in creating a condition assessment program utilizing acoustic and transient pressure monitoring. While the Park City Municipal Corporation set a goal for Park City to become the “The Best ...

  • Tackling water loss

    Water loss through leaks and non-revenue water are a global issue of monumental scale. A 2018 Consumer Council for Water report revealed that in England alone more than three billion litres of water are lost from leaking infrastructure every day, making water leakage the number-one concern for UK water utilities’ customers. Despite significant manpower-driven efforts to reduce leakage, it ...


    By Gutermann AG

  • Hydrogen Leak Detection with OGI

    Optical Gas Imaging (OGI) is a proven technology for locating hydrogen leaks in nuclear and conventional power plants. OGI can improve plant safety during routine operations and reduce revenue lost to downtime during major ...


    By EyeCGas -OGI by OPGAL

  • Acoustic Simulation - Case Study

    Ingeniería Acústica García-Calderón is a consultancy dedicated to the measurement, simulation, prediction and elaboration of proposals for corrective measures to evaluate and / or minimize noise and vibrations in the environment. The acoustic studies are carried out to determine the existence and degree of noise pollution that will affect people and the ...

  • Measuring Sound Absorption: Considerations on the Measurement of the Active Acoustic Power

    For the measurement of the sound absorption coefficient a large number of methods is available. These methods have in common that all of them rely on an overall sound Held model, i.e. a model that describes the whole sound field in front of the surface under investigation. Examples are the diffuse sound field model in the reverberation room method according to ISO 354 [ 1 ] and the plane wave ...


    By Soundinsight BV

  • Location of sound sources - Case Study

    IAG offers its customers the identification and location of noise in outdoor environments with multiple sources. Through the Acoustic Camera technology, an acoustic antenna with numerous microphones, a multichannel signal acquisition system and a software for digital processing of acoustic signals, we will know which are the main sources of noise and the contribution of each of them ...

  • Decibel Meters vs. Sound Meter Apps & Cheap Noise Meters

    Pulsar Instruments takes a look at why you should buy professional decibel meters from an established manufacturer for your noise measurements rather than use less accurate alternatives such as mobile sound meter Apps or cheap noise meters. Sound Meter Apps - How accurate are they? There is a growing number of sound meter Apps available as free downloads on Google Play Store and ...


    By Pulsar Instruments Plc

  • Comparison of greenhouse gas analyzers -measurements using photoacoustic, laser, FTIR analyzers and gas chromatography

    In the last decades, several technologies have been developed to measure greenhouse gas (GHG) concentrations and fluxes. We compared six devices using different measurement technologies: two gas chromatographic systems with a barrier discharge ionization detector (GC-BID) and an electron capture detector (GC-ECD), respectively, a portable GHG analyzer based on laser absorption, a photoacoustic ...


    By Gasmet Technologies Oy

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