AM 535

Artificial Mastoid
AM 535 is a device specifically designed for the measurement of bone conduction hearing aids and bone vibrators in hearing testing.
It consists of a mechanical device that simulates the human head's mastoid process, featuring a high-sensitivity force sensor and a soft rubber surface, accurately replicating the mechanical impedance characteristics at the mastoid area.
When used with an IEPE signal conditioner such as the MegaSig PM 0083, it achieves exceptional stability and accuracy.

Built-in sensor	Dynamic force sensor
Sensitivity	4.2pC/N ±10%
Capacitance	80pF
Frequency range	50 - 10kHz（Complies with the force impedance level of IEC 60318-6：2007dB, re 1（N/s）/m）
5.4N phase angle at 250Hz	-63°±6°
Impedance diffrernce between 5.4N and 2.5N at 250Hz	-2±0.9dB, re 1（N*s）/m）
Output interface	Microdot/M5
Operating temperature range	22-24℃（typical value of force impendance level）
Storage conditions	Temperature：25℃±5℃，humidity：30%-70%RH