1-axis accelerometer / piezoelectric / high-frequency
Bruel and Kjaer
Number of axes:
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.
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%.