Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Preferred |
|---|---|
| Description | Accelerometer |
| Diameter / length [mm] | 7.87 |
| Width [mm] | 5.54 |
| Thickness [mm] | 4.06 |
| Directivity | Single Axis |
| Impedance [Ohm] | 5200 |
| Nominal Voltage [V] | 1.5 |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] | -25 |
| Sensitivity Tolerance [± dB] | 3 |
| SNR [dB] | NA |
| AOP [dB] | NA |
| Connection | 3-Wire |
The BU Series piezo-ceramic accelerometer has output from 20 Hz to above 10 kHz, and is used primarily as a contact microphone for high noise environments. It may also be used as an accelerometer with lightweight structures. As a contact microphone, the BU may be worn on the throat, or touching a bony part of the head (top, temple, or mastoid bone). BU has been integrated into helmet designs for radio communication for military and emergency services.
| Product status | Preferred |
|---|---|
| Description | Accelerometer |
| Diameter / length [mm] | 7.87 |
| Width [mm] | 5.54 |
| Thickness [mm] | 4.06 |
| Directivity | Single Axis |
| Impedance [Ohm] | 5200 |
| Nominal Voltage [V] | 1.5 |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] | -25 |
| Sensitivity Tolerance [± dB] | 3 |
| SNR [dB] | NA |
| AOP [dB] | NA |
| Connection | 3-Wire |
The BU Series piezo-ceramic accelerometer has output from 20 Hz to above 10 kHz, and is used primarily as a contact microphone for high noise environments. It may also be used as an accelerometer with lightweight structures. As a contact microphone, the BU may be worn on the throat, or touching a bony part of the head (top, temple, or mastoid bone). BU has been integrated into helmet designs for radio communication for military and emergency services.
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Preferred |
|---|---|
| Description | Accelerometer |
| Diameter / length [mm] | 7.87 |
| Width [mm] | 5.54 |
| Thickness [mm] | 4.06 |
| Directivity | Single Axis |
| Impedance [Ohm] | 5200 |
| Nominal Voltage [V] | 1.5 |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] | -25 |
| Sensitivity Tolerance [± dB] | 3 |
| SNR [dB] | NA |
| AOP [dB] | NA |
| Connection | 3-Wire |
The BU Series piezo-ceramic accelerometer has output from 20 Hz to above 10 kHz, and is used primarily as a contact microphone for high noise environments. It may also be used as an accelerometer with lightweight structures. As a contact microphone, the BU may be worn on the throat, or touching a bony part of the head (top, temple, or mastoid bone). BU has been integrated into helmet designs for radio communication for military and emergency services.
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
