For microphones
Turb. att.: Up to 25 dB*
Turb. speed: Up to Mach 0.2
Freq. range (turbulence) 500 Hz - 10 kHz*
Acoustic att.: Less than 3 dB
Directivity: ± 60 Deg *Depending on flow-speed
GRAS 67TS Turbulence Screen Kit
The GRAS 67TS Turbulence Screen Kit is designed for aeroacoustic testing in solid-walled wind tunnels. The hydrodynamic component of turbulence is attenuated up to 25 dB. Thereby the acoustic signals of interest can be identified and diagnosed with a reliable resolution...
Material: Black POM
GRAS AL0007 Clips for 1/4” intensity microphones
Microphone clips 12 mm and 25 mm for side-by-side mounting of a pair of 1/4” intensity microphones...
Material: Stainless steel
Dimension: For 1/4”
Special feature: Freely adjustable
GRAS AL0013 1/4" Microphone Holder, Stainless Steel
The GRAS AL0013 is an adapter for mounting a microphone set (microphone/preamplifier) on tripods having a standard 1/4” UNC-20 male thread. The adapter is provided with a clamp for attaching a 1/4" diameter preamplifier...
Outer diameter: 90 mm
Hole diameter: 12 mm
Material: Foam
GRAS AM0069 Windscreen for 1/2" Microphones
AM0069 contains 5 spherical windscreens for 1/2" microphones optimized for sound pressure measurements under free-field conditions...
Outer diameter: 90 mm
Hole diameter: 6 mm
Material: Foam
GRAS AM0071 Windscreen for 1/4" Microphones
AM0071 contains 5 spherical windscreens for 1/4" microphones optimized for sound pressure measurements under free-field conditions...
Outer diameter: 90 mm
Hole diameter: 23 mm
Material: Foam
GRAS AM0363 Windscreen for 1" Microphones
AM0363 contains 5 spherical windscreens for 1" microphones optimized for sound pressure measurements under free-field conditions...
Outer diameter: 40 mm
Hole diameter: 6 mm
Material: Foam
GRAS AM0364 Windscreen for Array Microphones
AM0364 contains 6 spherical windscreens optimized for 1/4" dedicated array microphones, or other 1/4" microphone sets mounted in array modules PR0001 & PR0002...
Diameter x length: 95 x 190 mm
Slot for standard Intensity Probe
Material: Foam
GRAS AM0376 Windscreen for Intensity Probes
The AM0376 is an elliptical windscreen for use with GRAS Sound Intensity Probe 50GI...
Length: 10 mm
Inner threading for preamp.: 5.70-60 UNS-2
Outer threading for mic.: 11.70-60 UNS-2
Material: stainless steel
GRAS RA0001 Right-angled (90º) Adapter for 1/2" microphone and 1/4" preamplifier
The RA0001 is a right-angled adapter for using a 1/2" microphone with a 1/4" preamplifier. It can be used with any standard 1/2" microphone and 1/4" preamplifier such as the GRAS 26AC. The RA0001 could be useful in situations where the microphone has to be flush mounted on a wa..
Length: 10 mm
Inner threading for preamp.: 5.70-60 UNS-2
Outer threading for mic.: 11.70-60 UNS-2
Material: stainless steel
GRAS RA0003 Adapter for 1/2" microphone and 1/4" preamplifier
The GRAS RA0003 is a straight adapter, for placing between a 1/2" microphone and a 1/4" preamplifier...
Length: 9 mm Inner threading for preamp.: 5.70-60 UNS-2
Outer threading for mic.: 5.70-60 UNS-2
Material: stainless steel
GRAS RA0006 Right-angled (90º) Adapter for 1/4" Microphone and 1/4" Preamplifier
The RA0006 is a right-angled adapter for using a 1/4" microphone with a 1/4" preamplifier. It can be used with any standard 1/4" microphone and 1/4" preamplifier such as the GRAS 26AC. The RA0006 could be useful in situations where the microphone has to be flush mounted on a..
Length: 47.5 mm
Diam.: 12.70 mm
GRAS RA0016 20 dB Attenuator for externally polarized 1/2" microphones
Recommendation: Choose a microphone with low sensitivity instead of using the RA0016. The RA0016 is a 20 dB attenuator for inserting between a 1/2" microphone and preamplifier. It will attenuate the output signal of the microphone by 20 dB in order to avoid overloading the preamplifier. The ..