B&K Type 4321 Triaxial Piezoelectric Charge Accelerometer, Incl. Cable

B&K Type 4321 Triaxial Piezoelectric Charge Accelerometer, Incl. Cable

Type 4321 is a triaxial, piezoelectric, DeltaShear®, Unigain‚ accelerometer with three independent outputs for simultaneous high-level measurements in three mutually perpendicular directions. Each transducing element is individually adjusted. Type 4321 features three 10 – 32 UNF-2A receptacles for output connection and can be mounted on the object by means of a 10 – 32 UNF threaded steel stud or M4 screw.


  • Vibration analysis on larger structures


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 DeltaShear design provides a high sensitivity-to-mass ratio compared to other designs, a relatively high resonance frequency and high isolation from base strains and temperature transients. The piezoelectric element used in Type 4321 is a PZ 23 lead zirconate titanate element. The housing material is titanium.


The sensitivity given in the calibration chart is 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: – Hz

Temperature: – C

Weight: gram

Sensitivity: 1 pC/ms^-2

Residual Noise Level in Spec Freq Range (rms):  ±0.23 mg

Maximum Operational Level (peak): 500 g

Electrical connector: 10-32 UNF

Mounting: Stud

Accessory Included: AO 0038

Clip/Stud/Screw included: YQ 2960

Output: Charge-PE

Unigain: Yes

Triaxial: No


Applications: General Purpose, Vibration Test

Unit: pC

Resonance frequency: 40 kHz

Maximum Shock Level:  (± peak)1000 g