TYPE 4391

Piezoelectric Charge Accelerometer 

Piezoelectric Charge Accelerometer featuring top connector, designed for industrial measurements in harsh environments.

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Type 4391 is a piezoelectric, DeltaShear®, Unigain® accelerometer with top connector. Type 4391 features a TNC receptacle for output connection.

The accelerometer can be mounted on the object by means of a 10-32 UNF threaded steel stud.

USE SCENARIOS

  • Shock and vibration measurement and analysis
  • Vibration monitoring
  • Modal and structural analysis
  • Vibration test control
  • Production and quality control

This accelerometer may be treated as a charge source. Its sensitivity is expressed in terms of charge per unit acceleration (pC/ms–2, pC/g). The DeltaShear design consists of three piezoelectric elements and three seismic masses arranged in a triangular configuration around a triangular centre post. They are held in place by a clamping ring that isolates the configuration from the base. The ring also prestresses the piezoelectric elements to give a high degree of linearity.

This design provides a high sensitivity-tomass ratio, a relatively high resonance frequency and high isolation from base strains and temperature transients. The piezoelectric element used in Type 4391 is a PZ 23 lead zirconate titanate element, and the housing material is titanium.

Type 4391 includes the following accessories:

  • Carrying box
  • Calibration chart
  • YQ-2960: Set screw, 10 – 32 UNF
Freq. range
0.1 – 10000 Hz
Temperature
-60 – 180 ℃
Weight
16 gram
Sensitivity
1 pC/ms^-2
Residual Noise Level in Spec Freq Range (rms) ±
0.23 mg
Maximum Operational Level (peak)
2000 g
Connector
TNC
Mounting
Stud
Accessory Included
AO 0231
Clip/Stud/Screw included
YQ 2960
Output
Charge-PE
Unigain
Yes
Triaxial
No
TEDS
No
Applications
Industrial
Unit
pC
Resonance frequency
40 kHz
Maximum Shock Level (± peak)
2000 g