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What is sensitivity of accelerometer?
Sensitivity of the accelerometer, sometimes referred to as the “scale factor” of the accelerometer, is the ratio of the sensor’s electrical output to mechanical input. [Note that a transducer is defined generally as a device that converts one form of energy to another.
How do I choose an accelerometer sensitivity?
For example, if the expected vibration level is 0.1 g and the accelerometer has a sensitivity of 10 mV/g, then the voltage level of the signal would be 1 mV, and a higher sensitivity accelerometer may be desirable.
What is bandwidth in accelerometer?
In analog-output accelerometers, bandwidth is defined as the signal frequency at which the response falls to -3dB of the response to DC (or low-frequency) acceleration.
Why does an accelerometer need a low noise cabling?
Charge type accelerometers have extremely high bandwidth, dynamic range, and very wide temperature operating ranges. Charge sensors require special low-noise cabling because high-impedance charge signals are highly susceptible to RF (radio frequency) and EM (electro-magnetic) interference.
What kind of charge mode does an accelerometer use?
Charge sensors have a high impedance output that requires a special charge mode signal conditioner, such as the SIRIUS CHG charge amplifier from Dewesoft. Charge type accelerometers have extremely high bandwidth, dynamic range, and very wide temperature operating ranges.
How is the sensitivity of an accelerometer determined?
Sensitivity is specified in mV per G. If typical accelerometer sensitivity is 100 mV/G and you measure a 10 G signal, you expect a 1000 mV or 1 V output. The exact sensitivity is determined from calibration and usually listed in the calibration certificate shipped with the sensor. Sensitivity is also frequency dependent.
What is the frequency limit for an accelerometer?
Method Frequency Limit Handheld 500 Hz Magnetic 2,000 Hz Adhesive 2,500 to 5,000 Hz Stud > 6,000 Hz