Miniature Triaxial Accelerometer.
Endevco's latest miniature triaxial piezoresistive accelerometer,
now available from Bruel & Kjaer, is ideal for use in biomechanical
research applications such as the study of head injuries.
Small and lightweight (0.4 grams), the Endevco model 7269 measures
three orthogonal axes simultaneously and can be used for making
measurements on light structures with a minimum of mass loading.
Applications include testing of ejection seats, head-up displays and
sports helmets where the extremely small size allows for installation
in hard to access areas or on small electronics assemblies.
The Endevco model 7269 features three advanced micromachined
sensors designed for ruggedness, high output and high resonance
frequency. Each sensor includes an integral mechanical overtravel
stop and internal diodes are provided for electrostatic discharge
Each accelerometer has a full scale output of 400mV using by DC
excitation. The accelerometer has minimum damping to ensure
negligible phase shift over the specified frequency range.
Frequency response extends down to DC (steady state) acceleration
making the unit ideal for measuring long duration transient shocks.
Two versions are available covering ±500 and ±2000g with frequency
range of 0 to 3000Hz and 0 to 5000Hz respectively. Sensitivity for
the -500 model is 0.8mV/g and for the -2000 version 0.2mV/g
both at 100Hz and 10g.
Bruel & Kjaer recommends the use of Endevco's model 136 three
channel signal conditioner, model 4430A signal conditioner or the
OASIS computer-controlled system with this accelerometer.
For more information, please contact :-
Bruel & Kjaer, Bedford House, Rutherford, Close,
Stevenage, Hertfordshire, SG1 2ND. UK
Tel: +44(0) 1438 739000, Fax: +44(0) 1438 739099
Web site: www.bksv.com