Outdoor microphones

Outdoor microphones

Unprotected measurement microphones are sensitive to environmental factors such as wind, rain and snow. This shortcoming has been eliminated by specially designed units that protect the microphone. G.R.A.S. offers two types; Outdoor microphones for permanent outdoor use that can withstand all weathers year after year. And environmental microphones designed for temporary outdoor use in terms of days or weeks.

Both types are available in two versions:

0° incidence for airport noise monitoring and 90° incidence for community and traffic noise monitoring.

All G.R.A.S. versions comply with the relevant international standards for monitoring noise.

  1. 41AM Outdoor Mic System, airport noise
    Dyn range: 20 dB(A) to 156 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 41AM Permanent Outdoor Microphone System for airport noise

    The G.R.A.S. 41AM Outdoor Microphone System is for outdoor use whenever trouble-free acoustic measurements and, in particular, noise monitoring around airports are required.

    Learn More
  2. 41CN Outdoor Mic System, community noise
    Dyn response: 20 to 156
    Sensitivity: 50 mV/Pa

    G.R.A.S. 41CN Permanent Outdoor Microphone System for community noise

    G.R.A.S. 41CN Permanent Outdoor Microphone System for community noise Learn More
  3. G.R.A.S. 41AC-2 LEMO Outdoor Microphone
    Standard: IEC 61672-1
    Special features:
    RemoteCheck
    Configurable for 90 or 0 degrees of incidence
    IP55 proof

    G.R.A.S. 41AC-2 LEMO Outdoor Microphone with RemoteCheck for Community and Airport Noise

    The 41AC-2 is an outdoor microphone for unattended use for prolonged periods of time. It can be used for community noise applications or for monitoring of overhead aircraft noise. It has RemoteCheck for monitoring of the mesurement chain. Learn More
  4. G.R.A.S. 41AC-3 CCP Outdoor Microphone
    Standard: IEC 61672-1
    TEDS
    Special features:
    Configurable for 90 or 0 degrees of incidence
    IP55 proof

    G.R.A.S. 41AC-3 CCP Outdoor Microphone for Community & Airport Noise

    The 41AC-3 is an outdoor microphone for unattended use for prolonged periods of time. It can be used for community noise applications or for monitoring of overhead aircraft noise. Learn More

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