Alternative energy and noise protection? News from Gefell for wind turbine noise measuring
The Boundary-Layer Microphone - GF 1 and the weatherproof power supply unit WN 1
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Alternative energy and noise protection ? News from Gefell for wind turbine noise measuring
The Boundary-Layer Microphone - GF 1 and the weatherproof power supply unit WN 1
The Boundary-Layer Microphone GF 1 is a new measuring equipment especially designed to record sound emissions at Wind Power Stations according to IEC/EN 61400-11.
The boundary GF 1 and the weatherproof power supply unit WN 1 are specifically developed extensions in order to record the sound emission of wind power stations with measuring microphones.
Additionally, the GF 1 is suitable for determining emission-relevant sound power levels in open spaces, e.g. measurements at power stations, construction sites, filtration and cooling plants among others.
Due to the Operation near the ground, unwanted influences on the measurement results by reflections from the ground are avoided. Measurements are largely independent of the position of measurement and the composition of the ground.
The lower wind speed near the ground causes a further reduction in wind-generated noise at the microphone.
Acoustical specifications
As measuring microphone element, class 1 measuring microphones are suitable, which consist of measuring microphone cartridges with a frequency range from 20 Hz to 10 kHz, a dehumidifier adaptor and a measuring microphone pre-amplifier with 200 V or IEPE supply.
The amplification of the microphone signal can be set using a rotary switch. The integrated cable driver allows a transmission of the microphone signals over a cable length of up to 100 m.
with varnish and the weatherproof power supply unit, GF 1 and WN 1 form a weatherproof System for the standard-conforming sound emission measurement of wind power stations.
- 1/2" measuring microphone preamplifier MV 203.3
specification
The 1/2? measuring microphone preamplifier type MV 203 is a high-impedance transducer for 1/2" condenser measuring microphone capsules.
The MV 203 permits sound level measurements with a dynamic range from 11 dB up to 168 dB. The preamplifier has a low output impedance. This renders a good driver capability possible even for long cables. The preamplifier is equipped with a heater resistor preventing a possible condensation under extremely climatic conditions.
The Adaptor A 63.1 allows 1? condenser measuring microphone capsules to be mounted on the 1/2? preamplifier and the Adaptor A 67 makes the same for the 1/4? condenser measuring microphone capsules possible. The thread of the preamplifier confirms to the international standard according to IEC 61094.
The measuring microphone preamplifier MV 203 is designed for sound level meters of IEC Type 1 according to IEC 61672.
- dry adapter (TA 202)
specification
The dehumidifier TA 202 is mounted between a
- rain and dust protection RS 98 / windshield
Acoustic measurement technology since 1928
The Microtech Gefell GmbH is manufacturer of high quality, handmade measurement and studio microphones founded 1928 by Georg Neumann.
Besides the company offers calibration and services for all manufactured products.
The Measurement technology includes 1", " and " measurement capsules, measurement preamplifiers for different connection techniques (Conventional Lemo, ICP
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Acoustic measurement technology since 1928The Microtech Gefell GmbH is manufacturer of high quality, handmade measurement and studio microphones founded 1928 by Georg Neumann.Besides the company offers calibration and services for all manufactured products.The Measurement technology includes 1",½" and ¼" measurement capsules, measurement preamplifiers for different connection techniques (Conventional Lemo, ICP®, Phantom P 48 XLR, Digital USB AES 42 XLR), outdoor and environmental microphones, microphone arrays, sound intensity probes, power supplies, calibration devices as well as turnkey solutions (e.g. special test benches for car acoustics).
Datum: 23.03.2020 - 12:36 Uhr
Sprache: Deutsch
News-ID 1556999
Anzahl Zeichen: 2638
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