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Rugged Model 7269 Accelerometer from ENDEVCO Uses Micromachined Sensors For High Output And High Resonance Frequency
The Model 7269 miniature, triaxial piezoresistive accelerometer from Endevco
measures three orthogonal axes simultaneously. The Model 7269's extremely small size and light weight make it the ideal accelerometer for biomechanics
applications, such as the study of head injuries and the testing of automobiles, ejection seats, and heads-up displays.
The Model 7269 utilizes advanced micromachined sensors for ruggedness, high
output and a high resonance frequency. The sensors include integral mechanical overtravel stops that allow the accelerometer to withstand shocks
of up to ±2000 g's. In addition, internal diodes provide protection against the harmful effects of electrostatic discharge. Full scale output is 400 mV using 10 VDC excitation.
Weighing only 0.4 grams (0.015 oz.), the Model 7269 accelerometer can be used for making measurements on light structures with a minimum of mass loading. Its
small size also allows the device to be installed in hard-to-access areas or on small electronic assemblies.
The Model 7269 has minimum damping, thereby producing negligible phase shift over the specified frequency
range. The frequency response extends down to DC (steady state) acceleration, making it ideal for measuring long-duration transient shocks.
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