Precision Air Bearing Calibration Shaker
High Frequency Exciter System
Model K394B30 & K394B31
The Model K394B30/B31 Calibration Shaker System Air Bearing Shaker represents a new level of performance in calibration grade shakers. The K394B30/B31 continues the award winning PCB Group tradition of providing superior performance characteristics and ease of use while offering exceptional value and simplicity. A graphite air bearing combined with an ultra-stiff lightweight armature essentially eliminates transverse motion that plagues traditional flexure based shaker armature suspension systems.
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.
The shakers were specifically designed for use in the demanding environment of high volume, production comparison accelerometer calibration systems such as The Modal Shop’s Model 9155 Accelerometer Calibration Workstation.
- Graphite air bearing effectively eliminates transverse motion.
- Lorentz force coil lifting mechanism greatly improves calibration throughput.
- Easily adjusts to calibrate a wide range of sensor sizes.
- Rugged design handles day-to-day production use.
- 70 kHz mounted resonance of reference provides linearity through a large frequency range.
- Lightweight beryllium mounting provides unsurpassed accuracy.
- 10 mm usable stroke allows for great acceleration at low frequencies.
Model 9155 Accelerometer Calibration Workstation
Model 9155 Options
Model 9155 Specifications
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