Surface microphones
The GRAS high precision measurement 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. They have integrated preamplifier with plug & play functionality, wide linear frequency range and wide dynamic range.
GRAS surface microphones are among the range of special microphones that furthermore includes
Freq range: 5 Hz to 70 kHz
Dyn range: 56 dB(A) to 178 dB
Sensitivity: 0.5 mV/Pa
GRAS 40LA 1/4" CCP Precision Surface Microphone, High Pressure
The GRAS 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...
Freq range: 5 Hz to 70 kHz
Dyn range: 46 dB(A) to 167 dB
Sensitivity: 1.8 mV/Pa
GRAS 40LS 1/4" CCP Precision Surface Microphone
The GRAS 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 to 70 kHz and a large dynamic range topping at around 167 dB...
Freq range: 10 Hz to 12 kHz
Dyn range: 27 dB(A) to 145 dB
Sensitivity: 15 mV/Pa
GRAS 40PS-1 CCP Surface Microphone
The GRAS Surface Microphone 40PS-1 is a low-profile, light surface microphone for general purpose measurements on planar and curved surfaces exposed to slipstreams...
