Manufacturers' Specifications

Bruel & Kjaer 4393

Piezoelectric Charge Accelerometer

Charge sensitivity : 0.316 pC/ms^-2 or 3.1 pC/g ± 2 %   **
Voltage sensitivity : 0.48 mV/ms^-2 or 4.8 mV/g ± 2 %   **

Mounted resonance : 55 kHz
Frequency range - 5 % : 0.2 Hz to 12000 Hz
Frequency range - 10 % : 0.1 Hz to 16500 Hz

Capacitance - typical : 650 pF with supplied integral cable

Max transverse sensitivity : < 4 %
Transverse resonance : 18 kHz

Piezoelectric material : PZ23
Construction : Delta shear

Typical temperature transient sensitivity : 5 ms^-2/°C
Typical magnetic sensitivity (50 Hz to 0.03T) : 30 ms^-2/tesla
Typical acoustic sensitivity (154 dB SPL) : 0.04 ms^-2

Minimum leakage resistance at 20 °C : 20 GΩ
Ambient temperature range : -74 °C to 250 °C

Maximum operational shock (Peak) : ± 250 kms^-2
Maximum continuous sinusoidal acceleration (Peak) : 50 kms^-2;

Electrical Connector : M3 subminiature coaxial connector - side entry, recommended clearance for integral plug 18 mm

Mounting thread : M3, 2.2 mm deep
Mounting torque : 1 Nm, max = 2 Nm, min = 0.5 Nm

Dimensions - body : 7.3 mm diameter
Dimensions - overall height : 11 mm
Dimension - across base flats : 7.5 mm - spanner size

Weight : 2.4 grams
Case Material : Titanium ASTM Grade 2
Recommended cable : AO 0038

**   Individual specifications given in the calibration chart

To see the accessories typically included in the above accelerometer sets - click here.