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1-axis accelerometer / piezoelectric / high-frequency
4393 Bruel and Kjaer



  • Number of axes:


  • Technology:


  • Other characteristics:


  • Frequency:

    Min.: 0.1 Hz

    Max.: 16,500 Hz


Designed for high-frequency low weight measurements.

Type 4393 is a piezoelectric, DeltaShear®, Unigain® accelerometer with side connector. Type 4393 features M3 receptacle for output connection and has an M3 hole for mounting.

High frequency
Low weight
Vibration testing and analysis


This piezoelectric accelerometer may be treated as a charge source. Its sensitivity is expressed in terms of charge per unit acceleration (pC/g).

The DeltaShear design involves three piezoelectric elements and three masses arranged in a triangular configuration around a triangular centre post. The ring prestresses the piezoelectric elements to give a high degree of linearity. The charge is collected between the housing and the clamping ring. The piezoelectric element used is a PZ 23 lead zirconate titanate element. The housing material is titanium.

The sensitivity given in the calibration chart has been measured at 159.2 Hz and an acceleration of 10 g. For 99.9% confidence level, the accuracy of the factory calibration is ± 2%.

Other Bruel and Kjaer products

Vibration transducers