Acoustic Monitoring Articles
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What’s Being Done To Detect Water Leaks?
As we all know, water is one of the most precious resources that we have, but it’s all too easy for us to take it for granted, particularly in developed countries where we simply turn on a tap and out it comes. But access to water is coming increasingly under threat around the world, thanks to climate change, urbanisation, population growth, pollution and water mismanagement, and ...
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Carbon Dioxide Gas Sensor Technologies for Demand Control Ventilation Systems
Demand Control Ventilation (DCV) systems play a pivotal role in maintaining indoor air quality and improving energy efficiency. Typically, DCV systems will adopt CO2 sensors to continuously and accurately monitor indoor CO2 concentration levels in real-time. When it is detected that the indoor CO2 concentration exceeds the set threshold, the DCV systems will automatically increase the air ...
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The Origin of GCRTech
Dr. Chana shares his product evolution journey to creating some of the most technologically advanced instruments for flow, pressure and transient monitoring, and leakage management. Dr. Chana is at heart a problem solver. Over his 35 years in the water industry, some of the leading instrumentation manufacturers have asked him to join their technology teams to develop unique solutions to a newly ...
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The Use of Untethered Acoustic Ball Technology To Locate Leaks in Pressurized Water Mains - Case Study
A CAUTIONARY CASE STUDY: MINNEAPOLIS, MINNESOTA, USA Investor-owned & municipal utilities may experience catastrophic damage if it relies on Untethered Acoustic Ball technology to locate leaks. As shown below, the inspection of a 10,000-feet (3km) of 36-inch (913mm) diameter Prestressed Concrete Cylinder Pipe (PCCP), gave a clean-bill-of-health with ‘NO LEAKS’ using a leading ...
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Non-Permit Confined Space: Definition & Requirements
Confined spaces exist in many industries, including construction, manufacturing, and mining. These areas must be contained by physical barriers or other methods specified by OSHA standards. If you don’t follow these requirements properly and have an accident, it could result in serious injuries or even death. So what exactly is a non-permit confined space? And how do you know if ...
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Emission Gas Analyzers: Key Features and How to Select the Right One!
Delve into the world of Emission Gas Analyzers, high-tech devices ensuring environmental safety. The goal here is unearthing their features, types, and applications. Also, a guide will be provided to select the most fitting Analyzer for specific ...
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Quantitative 2D and 3D Schlieren Imaging for Acoustic Power and Intensity Measurements
Ultrasound imaging manufacturers are required to conduct hundreds of thousands of measurements of transducer power and intensity for research, development, regulatory compliance (FDA/IEC), and production quality assurance. This can delay new product introductions and force trade-offs between product performance and testing costs. High-resolution schlieren imaging provides real-time, 2D ...
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Ellipsoidal hydrophone with improved characteristics
Abstract A new style of hydrophone is being developed to meet or exceed the new recommendations set forth in the AIUM Acoustic Output Measurement Standard [1] as they apply to ultrasound measurements for submission to the U.S. FDA. The device can be calibrated and used over a frequency range extending from below 200 kHz to above 40 MHz. The new hydrophone is basically a membrane style hydrophone; ...
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A Novel Device for Total Acoustic Output Measurement of High Power Transducers
Abstract A robust needle hydrophone has been developed for HIFU transducer characterization and reported on earlier [1]. After a brief review of the hydrophone design and performance, we demonstrate its use to characterize a 1.5 MHz, 10 cm diameter, F-number 1.5 spherically focused source driven to exceed an intensity of 1400 W/cm at its focus. Quantitative characterization of this source at high ...
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Quantitative Real-Time Pulsed Schlieren Imaging of Ultrasonic Waves
Abstract A pulsed Schlieren system based on Raman-Nath scattering by ultrasonic waves in water is described. High powered, monochromatic infrared pulsed light is used in conjunction with axial optics and a video camera to visualize the acoustic field. Projection beam profiles in any plane parallel or orthogonal to the direction of acoustic propagation are demonstrated. Controlled delay between ...
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Measurements of acoustic pressure in the non-linear range in water using quantitative schlieren
Abstract The schlieren method, based on Raman-Nath scattering by ultrasonic waves, is extended to pressures up to 8.8~10~ Pa (about 5KW/cm2 for 4 MHz CW waves) by capturing up to the 16" order diffraction harmonics in water. Given the high spatial resolution (- 100 pm), this kind of measurement is not possible with conventional hydrophones. Working under partially applicable Raman-Nath regime ...
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Wideband Spherically Focused PVDF Acoustic Sources for Calibration of Ultrasound Hydrophone Probes
Abstract Several broadband sources have been developed for the purpose of calibrating hydrophones. The specific configuration described is intended for the calibration of hydrophones in a frequency range of 1 to 40 MHz. All devices used 25 µm film of PVDF bonded to a matched backing. Two had radii of curvatures (ROC) of 25.4 and 127 mm with f numbers of 3.8 and 19, respectively. Their ...
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The Benefits of Continuous Gas Analyzers in Real-Time Monitoring!
Embark on a journey into the realm of Continuous Gas Analyzers, where real-time monitoring transforms industries. Learn about their diverse types, appreciate their multifold advantages, grasp their vital applications, and master the art of selecting the perfect analyzer for your ...
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Types of Rain and Snow Sensors
Rain and snow sensors are an essential tool used in many industries, from agriculture to transportation. These sensors are designed to measure the amount of precipitation that falls in a given area, allowing individuals and organizations to make informed decisions about how to respond to weather conditions. Types of Rain and Snow Sensors There are several different types of rain and snow ...
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Noise control in building design planning is a sound investment
Jochen Schaal, managing director of SoundPLAN GmbH and Michel Rosmolen, director of SoundPLAN Asia, outline developments in room acoustics to improve our environment Demand for architectural services in India is increasing, with government initiatives like the Smart Cities Mission[i], encouraging development in the sector. This project aims to harness technology to improve urban development, ...
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Community Spotlight: Oakland. Maine - Case Study
Problem: The Town of Oakland, Maine has approximately 11.6 miles of gravity sewer piping, 52% of which is newer PVC pipe, with the remainder including a mix of clay, transite and fiberglass pipe. With only 800 mostly residential customers, and limited budget for maintenance, the Town needed a means to prioritize the cleaning and CCTV inspection of the collection system piping. Historically, the ...
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SL-RAT at Augusta Utilities Division, Georgia - Case Study
As one of the first SL-RAT adopters, Augusta Utilities integrated acoustic technology to address a consent decree by the Georgia Environmental Protection ...
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Greenville Utilities Commission - Optimizing Pressure Transient Monitoring With Data-Driven Monitor Placement - Case Study
The Greenville Utilities Commission (GUC) provides electric, water, sewer, and natural gas services to more than 135,800 customers in Greenville and across Pitt County, North Carolina. The utility’s distribution network is composed of approximately 70% polyvinyl chloride (PVC), 20% asbestos-cement (AC) and 10% cast iron pipelines. Providing a reliable supply of water while effectively ...
By Syrinix Ltd
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Keep Calm and Monitor - Thames Water Case Study
Real-time data help Thames Water mitigate transients & bursts Trunk main bursts are a major problem for large, urban water systems. Detecting, locating, and repairing pipe or joint failures rapidly is crucial to prevent loss of life and limit damage to the surrounding structures, including privately owned buildings, streets, and public utilities. Given the potential economic impact of a ...
By Syrinix Ltd
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Find your Cadence: Noise monitoring within everyone’s reach
We’ve expanded Cadence to revolutionise the way you monitor and control noise pollution. A seamless conduit that connects all your Acoem noise monitoring instruments in one user-friendly ecosystem, Cadence gives you the power to transform your environmental data into actionable insights in real ...
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