Sound and Vibration Instrument Hire and Calibration

Bruel & Kjaer 4381 Accelerometer Specifications

B&K 4381 : Accelerometer	£ 4 a day *

Piezoelectric charge accelerometers - with side 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 : Titanium
Recommended cable : AO 0038
** Individual specifications given in the calibration chart
E&OE - specifications subject to change without notice.
* Our standard hire charges are based on a 4-day minimum period, details other options.