Surface microphones

Surface microphones

The G.R.A.S. high-precision surface microphones are originally designed for in-situ boundary layer testing, where non-invasive mounting is a must. The height has been kept at 2.5 mm, and the microphone is surrounded by a fairing to reduce self-generated turbulence.

  • High precision measurement microphones
  • Non-invasive mounting and insignificant protrusion
  • Integrated preamplifier with plug & measure functionality
  • Wide linear frequency range
  • Wide dynamic range
  1. 40LS 1/4" CCP Precision Surface Mic
    Freq range: 5 Hz to 70 kHz
    Dyn range: 46 dB(A) to 167 dB
    Sensitivity: 1.8 mV/Pa

    G.R.A.S. 40LS 1/4" CCP Precision Surface Microphone

    The G.R.A.S. 40LS High-Precision Surface Microphone is a high-precision microphone for measurements on planar and curved surfaces. It has a wide useful frequency range reaching up to70 kHz and a large dynamic range topping at around 167 dB.

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  2. 40LA 1/4" CCP Precision Surface Mic, High Pressure
    Freq range: 5 Hz to 70 kHz
    Dyn range: 56 dB(A) to 178 dB
    Sensitivity: 0.5 mV/Pa

    G.R.A.S. 40LA 1/4" CCP Precision Surface Microphone, High Pressure

    The G.R.A.S. 40LA High-Precision Surface Microphone is a high-precision microphone for measurements on planar and curved surfaces. It has a wide useful frequency range reaching up to 70 kHz and a large dynamic range topping at around 178 dB.

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  3. 40PS CCP Surface Mic
    Freq range: 20 Hz to 10 kHZ
    Dyn range: 32 dB(A) to 136 dB
    Sensitivity: 5 mV/Pa

    G.R.A.S. 40PS CCP Surface Microphone

    The G.R.A.S. Surface Microphone 40PS is a low-cost microphone for general purpose measurements on planar and curved surfaces exposed to slipstreams.

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