Charge Mode

B&K Type 4393 Piezoelectric Charge Accelerometer, Incl. Cable

B&K Type 4393 Piezoelectric Charge Accelerometer, Incl. Cable

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%.


Frequency range: 0.1 – 16500 Hz

Temperature: -74 – 250 C

Weight: 2.4 gram

Sensitivity: 0.316 pC/ms^-2

Residual Noise Level in Spec Freq Range (rms): ±0.52 mg

Maximum Operational Level (peak): 5000 g

Electrical connector: M3

Mounting: Stud

Accessory Included: AO 0283

Clip/Stud/Screw included: YQ 2003

Output: Charge-PE

Unigain: Yes

Triaxial: No


Applications: Miniature

Unit: pC

Resonance frequency: 55 kHz

Maximum Shock Level (± peak): 25000 g