acoustic transducer News

  • Acoustic bubble spectrometer- Gen II from Dynaflow, Inc.

    DYNAFLOW, INC. is pleased to announce the release of Generation II of the ABS Acoustic Bubble Spectrometer©® (ABS) for the measurement of bubble size distributions and void fractions in gas/liquid mixtures. The ABS can be used in a wide variety of applications requiring the monitoring of the bubble population such as high velocity flows, oceanography, chemical engineering, cavitation studies, ...


    By Dynaflow, Inc.

  • Chelsea receives export order for Acoustic Echo Repeater System

    Chelsea Technologies Group announces a further export order for the Echo Repeater Acoustics Source (ERAS) system. ERAS is a compact and versatile acoustic system for the performance evaluation of a wide range ...


    By Chelsea Technologies Group

  • ESTECH marks 20th year with new acoustic testing site

    Situated less than 40 km from the centre of Tokyo, the two storey building has a hemi-anechoic chamber, an excitation test room and an associated test preparation room. The excitation test room, which can be flexibly partitioned, contains two structural beds isolated from external vibration. And two cranes capable of lifting up to 2.8 tonnes, for moving heavy structures such as engines, tractor ...

  • Pulsar’s Sludge Finder 2 – twin channel, versatile interface measurement

    Remote measurement with Sludge Finder 2 means you can put an end to tedious, time consuming, potentially unhygienic and hazardous manual measurements using gap switches or vacuum tubes. Sludge Finder 2 is a major update to Pulsar’s successful Sludge Finder, designed to reliably measure interface levels in primary, secondary or tertiary sludge tanks and SBR systems. A twin channel device, Sludge ...

  • Chelsea`s hydrophone arrays are being used by the NTNU to study the reactions of fish to sound

    “Chelsea has been working with the Norwegian University of Science and Technology (NTNU) for a number of years”, said Chelsea’s acoustics specialist Paul Bolton,  “they initially commissioned us to custom design a 6m vertical acoustic hydrophone array  in order to conduct novel underwater acoustic experiments.  This was followed by the design of three 8m ...


    By Chelsea Technologies Group

  • Pulsar’s Ultrasonic Success with Super-light Fumed Silica Measurement

    Fumed Silica has a bulk density of around 30g/l, and a surface area of sometimes hundreds of square metres per gram. It is used as a thickening agent in everything from gel batteries to non-drip paint, as a light-scattering agent in cosmetics and a toothpaste abrasive. However, a material as light as this presents significant difficulties in bulk measurement. After a number of failed attempts, ...

  • Pulsar's Sludge Finder 2 the Clear Choice for Wessex Water

    Pulsar Process Measurement Ltd have been awarded a five-year exclusive framework contract to supply Wessex Water with Sludge Finder 2 Sludge Interface measurement equipment. Sludge Finder 2 uses an acoustic sonar technology to measure crucial sludge interface levels, drawing on Pulsar's knowledge of echo processing and analysis to identify the changes in density that represent the sludge ...

  • New Portable Echo Repeater System

    Chelsea Technologies Group (CTG) won a tender from an American company for a portable echo repeater system, with a further system going to Singapore next year. This new system is a miniature version of CTG’s flagship towed sonar test and evaluation system, VASS (Versatile Acoustic Source System). A new low frequency hand-deployable acoustic transducer will be employed along with a portable PC ...


    By Chelsea Technologies Group

  • Taking the mic...

    Sound and vibration expert, Brüel & Kjær has launched updated versions of both its Accelerometer and Microphone catalogues, the latter of which also includes details relating to their range of specialised Hydrophone transducers.Brüel & Kjær’s hydrophones are absolutely waterproof and highly resistant to corrosion, making them ideal for use in water, liquids or gases. Each individually ...

  • Visit Brüel & Kjær at AES Show

    Visitors to this year’s Audio Engineering Society (AES) show in Munich can experience firsthand Brüel & Kjær’s latest range of electroacoustic tools. The company’s technical specialist will be demonstrating its latest range of electro and room acoustic solutions, including the flexible Multi-field Microphone Type 4961 - a brand new transducer that provides accurate measurements in ...

  • NOVEL SENSORS AID TIDAL TURBINE DEVELOPMENT

    Non-contact torque sensors from Sensor Technology are playing a key role in the development of commercial-scale in-stream tidal turbines produced by Irish company, OpenHydro. The company is using these novel sensors, which are based on surface acoustic wave (SAW) technology, to accurately measure rotational speed and frictional forces in a simulator for the turbine bearings, thereby allowing it ...


    By Sensor Technology Ltd

  • Larson Davis launches new audiometric couplers for insert earphones and hearing aid tests

    Larson Davis has raised the bar for audiometer calibration systems and guarantees total customer satisfaction to make sure clients are getting the best product at the best price. Larson Davis - a division of PCB Piezotronics, Inc., introduces two new 2 cm3 couplers and a new '711' coupler for testing insert earphones and other audio transducers. AEC204 is a very affordable occluded-ear ...

  • Servo research points the way to improved dynamics

    Research at the University of Manchester has demonstrated servo systems with vastly improved dynamics with the most challenging of loads. The key to the increased performance is a torque transducer from Sensor Technology employing Surface Acoustic Wave (SAW) techniques to deliver high-bandwidth, non-contact solution.The ease of set-up of modern servo drive systems, combined with steadily reducing ...


    By Sensor Technology Ltd

  • Bruel & Kjaer Announce Sound & Vibration Workshop

    Global sound and vibration expert, Bruel & Kjaer has announced it will run a free technical workshop with practical, demonstration-oriented sessions, including a full vehicle simulation test, on 12th November 2008.Bruel & Kjaer’s Sound & Vibration Workshop - aimed at anyone involved with automotive, mechanical or general industrial engineering industries - is made up of three ...

  • Noise source location passes Grundfos demo challenge

    Global pump manufacturer Grundfos has enhanced its noise source identification capabilities, with a system based on a microphone array containing 108 microphones and optical camera in the middle. Based in Denmark, Grundfos’ state-of-the-art laboratory carries out sound measurements to ensure its pump units are quiet enough for domestic use and industrial demands - and to locate any ...

  • Big Push to Recycle Plastic

    Cold extrusion is playing an ever greater part in recycling of waste plastic, and the Department for Business and Enterprise is sponsoring research into development of the machinery necessary for such work. Engineers at Bradford University have built a pilot plant and are running a series of trials with different processes, feed plastics, additives, and final products. Leader of the project, Dr ...


    By Sensor Technology Ltd

  • BRUEL & KJAER UPDATES RANGE OF MEASURING MICROPHONES

    Bruel & Kjaer (B&K) introduces new, state-of-the-art models in its range of measuring microphones and related equipment for the measurement of sound in the latest version of its Microphones & Conditioning Product Catalogue. In response to customer requests, the 2007 catalogue includes connection charts for the extended ranges of microphones (diffuse-field, pressure-field, low-noise), ...

  • Meet Brüel & Kjær at Autumn Events

    Sound and vibration specialist, Brüel & Kjær is participating at several technical trade shows during September. The company’s noise specialists will be presenting papers and exhibiting at Acoustics 2011 in Glasgow, from 14th to 15th September at the Crowne Plaza, Glasgow. Organised by the Institute of Acoustics’ (IOA) Building Acoustics, Environmental Noise, Noise and ...

  • Brüel & Kjær goes gold

    Brüel & Kjær is proud to be a Gold sponsor at this year’s Euronoise 2009 conference, taking place in the Edinburgh International Conference centre. Throughout the three day event (running from 26th to 28th October) visitors can meet the company’s expert Technical Engineers, as they exhibit Brüel & Kjær’s latest sound and vibration equipment, including the world’s first multi-field ...

  • Ground Crews Talk Sense On Generator Maintenance

    Aircraft servicing times are being reduced, enabling more flying hours, thanks to a new fully automatic generator testing station developed by MEL Aviation in Sudbury, Suffolk. A key element in the design of the station is the use of a TorqSense non-contact torque sensor, which can be deployed instantly for high performance acceleration and deceleration tests of aircrafts’ ...


    By Sensor Technology Ltd

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