Product category:
Accelerometers and Vibration Sensors
News Release from: Bruel and Kjaer UK | Subject: Model 7269 piezoresistive accelerometer
Edited by the Engineeringtalk Editorial
Team on 13 July 2001
Piezoresistive accelerometer for
biomechanical use
Endevco's latest miniature triaxial piezoresistive accelerometer, now available from Bruel and Kjaer, is ideal for use in biomechanical research applications such as the study of head injuries.
Endevco's latest miniature triaxial piezoresistive accelerometer, now available from Bruel and 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
This article was originally published on Engineeringtalk on 20 Jun 2008 at 8.00am (UK)
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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 (ESD) protection.
Each accelerometer has a full scale output of 400mV using 10V 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 ñ500 and ñ2000g 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 and 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.
With over 55 years experience, Bruel and Kjaer is a world leading manufacturer and supplier of sound and vibration products for use in a wide range of applications including environmental noise measurements, building acoustics, vibration measurements and quality control for use in the automotive, aerospace and consumer industries as well as by local authorities.
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