The K394B30 utilizes an aluminum and beryllium core to achieve a frequency range of 2 Hz to 15 kHz. The K394B31 utilizes a beryllium only core to achieve a frequency range of 2 Hz to 20 kHz.
Unlike other air bearing shakers that use rubber bands to adjust and balance the armature, the 396C10 and 396C11 use a unique Lorentz force lifting mechanism making calibration of various accelerometer sizes quick and easy. An integral reference accelerometer mounted within a beryllium insert has a mounted resonance greater than 70 kHz permitting the shaker to be used for resonance searches to over 50 kHz while effectively eliminating the need for complicated mass loading corrections. In addition, this innovative two-part armature design provides electrical isolation of the sensors, improving accuracy by eliminating electrical noise in the calibration measurement. A SmartAmp power amplifier makes system operation over 92% efficient. The SmartAmp protects the shaker by sensing when there is no air flow to the shaker and automatically shutting down.
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