TYPE 4374

Miniature piezoelectric charge accelerometer, side connector, integral cable

Designed for high-level, high-frequency measurements in confined spaces and on delicate structures.

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Type 4374 is a piezoelectric, Planar Shear accelerometer. The integrated side cable terminates with a 10 – 32 UNF connector. Type 4374 is mounted on the object adhesively.

USE SCENARIOS

  • High-level, high-frequency measurements
  • Measurements in confined spaces
  • Measurements on delicate structures
  • Vibration testing and analysis

CHARACTERISTICS

This piezoelectric accelerometer may be treated as a charge source. Its sensitivity is expressed in terms of charge per unit acceleration (pC/g).

In the Planar Shear design, the piezoelectric element undergoes shear deformation as in the DeltaShear® design. Two rectangular slices of piezoelectric material are arranged on each side of a rectangular centre post. Two masses are held in position using a high tensile strength clamping ring. 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 in Type 4374 and Type 4734-S is PZ 27. Type 4734-L is PZ 23. The housing material is titanium.

CALIBRATION

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
1 – 26000 Hz
Temperature
-74 – 250 C
Weight
0.75 gram
Sensitivity
0.15 pC/ms^-2
Residual Noise Level in Spec Freq Range (rms) ±
1.85 mg
Maximum Operational Level (peak)
5000 g
Electrical connector
10-32 UNF
Mounting
Adhesive
Accessory Included
Integral AO 0038
Clip/Stud/Screw included
None
Output
Charge-PE
Unigain
No
Triaxial
No
TEDS
No
Applications
Miniature
Unit
pC
Resonance frequency
85 kHz
Maximum Shock Level (± peak)
25000 g