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Hardware and Software for Investigating
Animal Acoustic Communication
Avisoft Bioacoustics
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16548 Glienicke
Germany

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USG Electret Ultrasound Microphone with Test Signal Speaker mounted on a 90 mm Disk (Avisoft Bioacoustics / Knowles FG-DT90)

part # 40009
FG-DT90 front FG-DT90 back
The Avisoft Bioacoustics 90 mm disk microphone is intended for installation at the bottom of a wind turbine nacelle. It is equipped with a 40 kHz test signal speaker and a microphone heating for improving the reliability under adverse weather conditions. This setup has been desiged in cooperation with the German BMU-funded research project on reducing bat fatalities at wind turbines in central Europe.
  • Approximate input-referred self-noise level (bandwidth: 30-50 kHz): 26 dB SPL
  • Power supply : 5V, 25 mA (provided by UltraSoundGate x16Hnbm)
  • Microphone connector: male XLR-5 plug
  • Test signal speaker connector: male XLR-4 plug
  • Heating conncetor: USB B connector
  • Included cables: 1 x Microphone and speaker control cable (5m) for the connection to the UltraSoundGate 116Hnbm/416Hnbm base unit, 1 x USB power supply cable (5m) for the heating (note that this microphone model requires the USG 116Hnbm or 416Hnbm - other models are not directly compatible).
  • Disk diameter : 90 mm
  • Mounting disk diamter: 140 mm
  • Recommended drill diameter on the nacelle: 100 or 102 mm
  • Depth : 45 mm
  • Weight : 250 g


frequency response
Polar diagram FG-DT80

polar diagram

USG116HnbmWEASystem

Principe of the complete Wind Turbine Bat Monitoring System according to the BMU-funded research project (click to enlarge)

USG Electret Ultrasound Microphone mounted on a 90 mm Disk (Avisoft Bioacoustics / Knowles FG-D90-P48)

part # 40023
FG-D90-P48 front
  • Approximate input-referred self-noise level (bandwidth: 30-50 kHz): 26 dB SPL
  • Power supply : 48V, 5 mA
  • Microphone connector: male XLR-3 plug
  • Heating conncetor: USB B connector
  • Included cables: 1 x Microphone cable (5m) for the connection to the USB audio interface unit, 1 x USB power supply cable (5m) for the heating.
  • Disk diameter : 90 mm
  • Mounting disk diamter: 140 mm
  • Recommended drill diameter on the nacelle: 100 or 102 mm
  • Depth : 45 mm
  • Weight : 205 g

Links / Downloads

Anleitung zur Inbetriebnahme und Kalibrierung des WEA-Fledermausmonitoring-Systems (German)

Behr, O., Brinkmann, R., Korner-Nievergelt, F., Nagy, M., Niermann, I., Reich, M., Simon, R. (Hrsg.) (2015). Reduktion des Kollisionsrisikos von Fledermäusen an Onshore-Windenergieanlagen (RENEBAT II). - Umwelt und Raum Bd. 7, 368 S., Institut für Umweltplanung, Hannover

WindBat - Fledermäuse und Regenerative Energien (website of the BMU project research team)

© 2014 Avisoft Bioacoustics

last modified on 05 September 2016