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LI0063 – Revision 29 May 2015
Applications for Flush-mount Measurement Microphones
The G.R.A.S. line of flush-mount measurement microphones combines the high precision and
reliability of G.R.A.S. measurement microphones with the need for fitting sensors into very
confined spaces and narrow structures. With a height of less than 10 mm (0.4 inch) and thin coax
connection, these acoustic sensors can be integrated into literally any design without sacrificing
aerodynamic properties.
Fig. 1.
A G.R.A.S. 1/4” flush-mount microphone
mounted with mounting adapter.
General Handling Rules for Flush-mount Microphones
Save the Protection Grid
If you use the flush-mount microphone without grid (normal flush-mount application) then store
the grid. Mount the protection grid whenever the flush-mount microphone is removed from its
operating position.
Physical Deformation
Do not let any object touch the diaphragm. Avoid also touching it with your fingers.
Cleaning
If you must clean the diaphragm, use clean and dry air. This is available in cans from e.g. camera
shops.
