Manufacturers' Specifications

Bruel & Kjaer 4378

Piezoelectric charge accelerometer

Charge sensitivity : 31.6 pC/ms^-2 or 310 pC/g ± 2 %   **
Voltage sensitivity: 26 mV/ms^-2 or 260 mV/g ± 2 %   **

Mounted resonance : 13 kHz
Frequency range - 5 % : 0.2 Hz to 2800 Hz
Frequency range - 10 % : 0.1 Hz to 3900 Hz

Capacitance - typical : 1200 pF including supplied cable

Max transverse sensitivity : < 4 %
Transverse resonance : 3.8 kHz
Piezoelectric material : PZ27
Construction : Delta shear

Typical temperature transient sensitivity : 0.001 ms^-2/°C
Typical magnetic sensitivity (50 Hz to 0.03T) : 0.5 ms^-2/tesla
Typical acoustic sensitivity (154 dB SPL) : 0.001 ms^-2
Minimum leakage resistance at 20 °C : 20 GΩ
Ambient temperature range : -40 to 250 °C

Maximum operational shock (± Peak) : 5 kms^-2
Maximum continuous sinusoidal acceleration (Peak) : 5 kms^-2
Maximum acceleration (Peak) with mounting magnet : 0.2 kms^-2

Electrical Connector : 10-32 UNF miniature coaxial connector - top entry
Mounting thread : 10-32 UNF, 3.2 mm deep
Mounting torque : 1 Nm, max = 2 Nm, min = 0.5 Nm

Dimensions - body : 30 mm diameter
Dimensions - overall height : 38 mm
Dimension - across base flats : 30 mm - spanner size

Weight : 175 g
Case Material : Stainless steel AXIS 316
Recommended cable : AU 0038

**   Individual specifications given in the calibration chart

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