Manufacturers' Specifications

Bruel & Kjaer 4370

Piezoelectric charge accelerometer, top connector

Charge sensitivity : 10 pC/ms^-2 or 98 pC/g ± 2 %   **
Voltage sensitivity : 8 mV/ms^-2 or 80 mV/g ± 2 %   **

Mounted resonance : 16 kHz
Frequency range - 5 % : 0.2 Hz to 3500 Hz
Frequency range - 10 % : 0.1 Hz to 4800 Hz

Capacitance - typical : 1200 pF with supplied cable

Max transverse sensitivity : < 2 %
Transverse resonance : 4 kHz
Piezoelectric material : PZ23
Construction : Delta shear

Typical temperature transient sensitivity : 0.02 ms^-2/°C
Typical magnetic sensitivity (50 Hz to 0.03T) : 1 ms^-2/tesla
Typical acoustic sensitivity (154 dB SPL) : 0.001 ms^-2
Minimum leakage resistance at 20 °C : 20 GΩ
Ambient temperature range : -74 to 250 °C

Maximum operational shock (Peak) : ± 20 kms^-2
Maximum continuous sinusoidal acceleration (Peak) : 20 kms^-2
Maximum acceleration (Peak) with mounting magnet : 0.6 kms^-2

Electrical Connector : 10-32 UNF, miniature coaxial connector

Mounting thread : 10-32 UNF, 3.2 mm deep
Mounting torque : 1 Nm, max = 2 Nm, min = 0.5 Nm

Dimensions - body : 21 mm diameter
Dimensions - overall height : 22.6 excluding top connector
Dimension - across base flats : 21 mm, spanner size

Weight : 54 g
Case Material : Stainless steel AI SI 316
Recommended cable : AO 0038

** Individual specifications given in the calibration chart