Acoustic
the study of sound.
See Also: Sound, Ultrasound, Audio, Infrasound, Reverberation, Acoustical, Bioacoustic, Audio Test Systems
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Online Partial Discharge Alarm System
PD Annunciator™
The PD Annunciator™ unique design consists of a three channels acquisition module paired with sensors of your choice, most commonly TEV and Acoustic or HFCT. With many advancements and innovations, the PD Annunciator™ handles partial discharge monitoring on metallic cabinets using our proven and advanced technologies.
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Acoustic Emission Testing Equipment
1283 USB AE Node
The 1283 USB AE Node is a full-featured, low-cost Acoustic Emission testing equipment that plugs conveniently into and is powered by the USB port of a user’s PC or laptop to maximize portability and versatility.
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Power Measurement
Precision Acoustics manufactures Radiation Force Balances and Check Sources which can be used to measure ultrasound power according to the IEC Standard 61161. All products are supplied with a calibration from The National Physical Laboratory, LONDON.
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Portable Fuel Dilution Meter
FDM 6000
The FDM 6000 is a portable, battery operated fuel dilution meter that determines the concentration of fuel dilution present in an oil sample within a matter of minutes. The FDM 6000 uses a unique patent pending fang design to pierce the cap of a disposable sample vial and draws in the headspace from the vial. The headspace flows over a SAW (Surface Acoustic Wave) sensor which reacts specifically to the presence of fuel vapor with a detection range of 0 – 15%. It can detect diesel, gasoline or jet fuel in engine oil. It conforms to ASTM D8004 - "Standard Test Method for Fuel Dilution of In-Service Lubricants Using Surface Acoustic Wave Sensing"
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Acoustical Generator (STIPA Reference)
TalkBox
The TalkBox is an acoustic signal generator for speech intelligibility measurements in evacuation and announcement systems, as well as for level alignment of teleconference or other audio systems. It allows you to perform a complete end-to-end evaluation of the speech intelligibility STI from the talker’s microphone to the listener’s ears.
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Acoustical Random "Noise" Generator
ARNG-2000
Eliminate and Defeat otherwise undetectable distance surveillance devices such as Microwave, Laser and Boom Microphones
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Scanning Acoustic Microscope
Echo
The ECHO scanning acoustic microscope is a nondestructive ultrasonic flaw detector designed to simplify testing, increase yield and maximize productivity in the lab or on the production floor.
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Acoustic Noise Generator
ANG-2200
The ANG-2200 Acoustic Noise Generator creates a perimeter of noise that defeats acoustic leakage eavesdropping devices including wired microphones inside walls, contact microphones, audio transmitters located in AC outlets, and laser/microwave reflections from windows.
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Dynamic High Pressure Sensors
Columbia Research Laboratories
Columbia's line of Dynamic Pressure Sensors can also serve as Acoustic Sensors (Microphones). They are designed to measure fast pressure variations, surges and dynamic blasts. The Sensors vary from low cost, small size, and lightweight to High Pressure (to 10,000psi) units, with all-welded contructions for extreme ruggedness, making them excellent choices for a wide range of applications.
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Logger Version 2-D Electro-Magnetic Current Meter for Deep Ocean
INFINITY-Deep AEMD-USB
INFINITY-Deep is an autonomously deployable data logger for current speed measurements in the deep oceans. The currents in the deep oceans are very weak. It is too hard to accurately measure the deep water currents by some ADVs (Acoustic Doppler Velocimeters) that detect the Doppler-effect by scatter with the suspended particles in the water, because the concentration is very low. INFINITY-Deep measures 2-D current data through a magnetic field according to Faraday's law. Therefore, even if the suspended particles do not exist around the sensor, it can provide the accurate current data. The depth rating is 6,000m. Compared to INFINITY-EM, the instrument has a depth and a tilt sensors to monitor mooring status. Also, the battery capacity doubles for long-term current velocity measurements.
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Asset Monitoring
Innerspec manufactures and commercializes unique monitoring solutions using proprietary EMAT technology under our FARSENSE NDT division. In addition to our own developments, we have also partnered with MISTRAS to commercialize their Acoustic Emission monitoring technology in selected markets in Europe.
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TOFD Method of Acoustic Control
Time-of-flight diffraction method of acoustic control is a software and hardware suite used for material strength testing based on TOFD method of acoustic control.
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RiverRay ADCP
Teledyne Marine RD Instruments
Go straight to work collecting highly accurate stream and river discharge data with the RiverRay Acoustic Doppler Current Profiler (ADCP).
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Acoustic Recorder
Reach Technologies' Acoustic Recorders provide cost-effective signal recording, analysis and playback. These units are highly configurable and come in a wide variety of chassis configurations, bandwidths and channel counts.
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Real-Time Online Monitoring to Detect and Analyze Potential Partial Discharge (PD) Signals and Insulation Faults using UHF, AE, and HFCT
PDMonitor
Power Monitoring and Diagnostic Technology Ltd.
The PDMonitor, which utilizes Ultra High Frequency (UHF), Acoustic Emission (AE) and High Frequency Current Transformer (HFCT) sensors and is designed to conduct real time online monitoring to detect and analyze potential Partial Discharge (PD) signals and insulation faults before they lead to breakdown or catastrophic failure in power assets. The system provides the developing trend of the PD, when occurring, as alarms in real time, thus helping to predict the insulation degradation status of the asset, prevent sudden accidents, and provide an effective database for Condition-Based Maintenance (CBM) of power assets.
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Portable Data Recorder For Acoustics & Vibration
DR-7100
The DR-7100 is a portable data recorder for acoustic and vibration with high accuracy.
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Full-spectrum Acoustic Logger
AudioMoth
AudioMoth is a low-cost, full-spectrum acoustic logger, based on the Gecko processor range from Silicon Labs. Just like its namesake the moth, AudioMoth can listen at audible frequencies, well into ultrasonic frequencies. It is capable of recording uncompressed audio to microSD card at rates from 8,000 to 384,000 samples per second.
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Slow Rotating Bearing Diagnosis Instrument
MK-560
MK-560 diagnoses slow rotating bearing by extracting and evaluating of AE (Acoustic Emission) signal at bearing trouble. This enables immediate diagnosis at site.
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Acoustic Emission Sensors
Acoustic wave (acoustic emission) sensors are the ceramic piezoelectric transducers converting the mechanical elastic acoustic waves generated in the material (e.g. elastic waves occur when a material cracks, wears, deforms, or corrodes) to electrical signals. The electrical signals are then amplified and filtered by a preamplifier and then transmitted to a special acoustic emission acquisition instrument for further data processing and analysis.
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Acoustics
When it comes to selecting a microphone for product tests—whether for sound power, sound quality, or noise source location—there's no need to compromise to sacrifice quality or performance for affordability.
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BAW Devices
Teledyne RF & Microwave has been producing Bulk Acoustic Wave (BAW) delay devices since the early 1960’s. Over the years,Teledyne has constantly improved BAW technology and is currently the world’s only supplier of microwave bulk acoustic wave delay devices. Markets for BAW devices include instrumentation and radar altimeters and are available in connectorized, pin and surface mount configurations.BAW devices operate as low as 300 MHz and as high as 17 GHz, usually in sub-bands of around 10%. Depending on the delay and frequency of operation the insertion loss is in the range 30 dB to 90 dB.
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Workhorse Horizontal
Teledyne Marine RD Instruments
The 300 kHz long-range Horizontal Acoustic Doppler Current Profiler (H-ADCP) is a narrow beam acoustic monitoring system that “looks” out horizontally from an offshore or coastal to measure near-surface water currents and multi-directional waves.
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Complete Headphone Test Platform
Zumi Systems and Hill Acoustics
Zumi Systems and Hill Acoustics are collaborating to bring the ultimate headphone test solution to the market. The ZUMI X HILL platform enables factories, design houses, labs, brand owners and purchasing departments test, evaluate and trim their headphone and earphone products in an easy and repeatable way.
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Sensing System
DAS
Our Distributed Acoustic Sensor(DAS) with excellent pattern recognition software can detect and locate the distributed thousanfs of acoustic events. Whenever any vibration or sound around its sensing fiber is detected, our DAS system will process the measured data in real-time and its pattern recognition software will recognize the types of the events, such as digging, pipeline leakage, fence breach, vehicle moving person walking. And, the detected events are reported to the alarm server to help operators take actions to protect theor facilities.
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SoundLink Underwater Acoustic Modems
With the innovative technologies, LinkQuest's modems have achieved significantly increased data rate (up to 38,400 baud), lower power consumption and unprecedented robustness. All of LinkQuest's modems perform at a bit error rate of less than 10 which is equivalent to the quality of wire line communication. LinkQuest's extensive line of underwater acoustic modems outperform any competing products in technical aspects for both near-vertical, horizontal and extreme horizontal underwater environments.
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Partial Discharge Testing Equipment
AR700
PD Defect Location in High-Voltage Equipment Insulation by Acoustic Sensors To act on deteriorating insulation the source of PD must be known.The insulation defects produce partial discharges, which emits electrical impulses, radiation of electromagnetic waves as well as acoustic signals.The AR700 measures acoustic signals with multiple sensors spread over the transformer. Then the software determines the failure location using the time difference of all incoming signals. Finally, these coordinates are shown in a 3D model of the transformer. AR700 device is used for measuring of acoustic signals on the external surfaces of gas-insulated breakers and substations, power transformers and other tank high-voltage equipment. The acoustic signals are caused by partial discharges in the insulation, which is the sigh of the defects.The advantage of “AR700” device is the quick installation of the acoustic PD sensors on the external surface of high-voltage equipment tank. The sensors have magnetic holder that is why there is no need to de-energize the equipment for the sensors installation. “AR700” device has 4 syn-chronic channels for acoustic signal measurement. This gives the possibility not only to find the defects in the insulation, but also to locate them. The location function of the “AR700”device is unique for acoustic devices.
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Sound Level Meters
Acoustic Data These definitions are intended simply as an aid to understanding and for this reason, some are not strictly scientifically accurate. For correct formal definitions, consult IEC standards 60651, 60804, 60942, 61252 and IEC 61672: 2003 part 1.
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Cable Scanner
MI 2014
Cable Scanner is easy to use LAN tester with wide variety of functions for fault finding and troubleshooting on IT cabling connections. TDR facility with adjustable NVP allows determination of distance to the fault or cable length measurement. Acoustic generator combined with a receiver enables pair determination in multi-pair cables.
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Ocean Surveyor
Teledyne Marine RD Instruments
For decades, Teledyne RD Instruments has been the preeminent supplier of Acoustic Doppler Current Profiling (ADCP) instrumentation for open ocean applications. Teledyne RDI’s vessel-mounted Ocean Surveyor family of ADCPs continues to raise the bar, collecting detailed maps of the distribution of water currents and suspended materials through the water column and along the ship’s path - at depths and resolutions previously considered unattainable. In real time, the ADCP is also used to aid in situ decision-making, to adapt field operations, and to understand current regime characteristics.
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Advanced Handheld Partial Discharge Detector
PDetector
Power Monitoring and Diagnostic Technology Ltd.
The PDetector is an ideal device for On-Line Partial Discharge (OLPD) testing of MV and HV equipment which employs all 5 types of OLPD sensor technology: Ultra-High Frequency (UHF), Acoustic Emissions (AE), Ultrasonic, High Frequency Current Transformer (HFCT), and Transient Earth Voltage (TEV). The information from multiple sensors gives the PDetector the versatility to detect all types of PD in all types of substation apparatus. The exact type of PD activity can be determined effectively using multiple on-screen data spectrum analysis.
