Microphone developed to withstand the harsh wheelhouse environment during brake testing
High Temperature Surface Mount Pressure Mic for Accurate Placement in Confined Spaces
The GRAS 147AX is a rugged, surface mount, pressure microphone set. This CCLD microphone set offers a unique and practical solution to the problem of mounting precision microphones in engine bays and other confined spaces.
Being able to accurately define, describe and reproduce exact microphone positions are essential for precision analyses including Transfer Path Analysis, Acoustic Transfer Function and Engine Noise Reduction. The GRAS 147AX can be directly mounted via its magnet or by using the magnet with mounting disks attached to the test object with double-sided tap, glue or screw.
The GRAS 147AX is designed to deliver reliable, accurate measurements in harsh test environments. It combines the high precision and stability of a laboratory microphone under adverse conditions such as shock, high or low temperatures, water spray, oil mists and dust.
The GRAS 147AX is IP67 rated. All exposed parts are protected by water and oil repellent coating, which also is easy to clean. The coating can withstand heat and chemicals.
In addition to the microphone set’s basic resilience against shock, dirt, and moisture, a replaceable protective grid with water and dust filter adds an extra layer of flexible protection, including protection against high-velocity particles.
