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Sensor sensitivity is the ratio of electrical output to mechanical input. For accelerometers, typically in mV/g. Higher sensitivity means larger output signal for the same vibration level but lower maximum measurement range.

Match sensitivity to expected levels and DAQ input range. High sensitivity (500 mV/g) for low vibration; low sensitivity (10 mV/g) for shock/high-g applications. Keep output below max voltage to avoid clipping.

Dynamic range = max signal / noise floor, in dB. For IEPE sensors with ±5V max output and ~1 mV noise, DR ≈ 74 dB. Higher supply voltage and lower noise floor increase dynamic range.

IEPE sensors need constant-current excitation (2–20 mA) at 18–30V DC bias. The AC vibration signal rides on the DC bias. ICP® is PCB Piezotronics' trademark for IEPE technology.

Yes. Sensor sensitivity drifts due to aging, temperature, cable damage, and mechanical shock. Annual calibration is recommended. Typical drift is <1%/year for quality sensors.