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1-axis accelerometer / piezoelectric / low-frequency / high-sensitivity
4381 Bruel and Kjaer



  • Number of axes:


  • Technology:


  • Other characteristics:

    low-frequency, high-sensitivity

  • Acceleration range:

    19,613 m/s² (64,347 ft/s²)

  • Frequency:

    Min.: 0.1 Hz

    Max.: 4,800 Hz


The 4381 from Bruel and Kjaer is a piezoelectric, DeltaShear®, Unigain® accelerometer with side connector. Its compact housing is made of titanium and features high sensitivity with a general purpose, and a low-level, low-frequency measurement. Its sensitivity is measured in charge per unit acceleration (pC/g) in the calibration chart at 159.2 Hz and an acceleration of 10 g. It has three piezoelectric elements and three masses classified into a triangular configuration around a triangular center post with a ring that gives piezoelectric elements a high degree of linearity and the accuracy of the factory calibration is ± 2%. Z 23 lead zirconate titanate element is the piezoelectric element used. The charge is gathered between the housing and the clamping ring.

Other Bruel and Kjaer products

Vibration transducers