09Winter 2009 Product resource - Endevco
09Winter 2009 Product resource - Endevco
09Winter 2009 Product resource - Endevco
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Piezoresistive accelerometers<br />
<strong>Endevco</strong> piezoresistive accelerometers are DC responding, and are<br />
ideal for measuring long duration transient events. Applications<br />
include automotive crash testing, where <strong>Endevco</strong> continues to be the<br />
world leader. Other applications include high g shock and biomedical<br />
applications. Most <strong>Endevco</strong> piezoresistive accelerometers use silicon<br />
micromachined MEMS sensors which are produced at <strong>Endevco</strong>’s<br />
state-of-the-art facility in Silicon Valley. They are available in surface<br />
mount packages, general use configurations and application specific<br />
packaging. Most accelerometers are undamped to minimize phase<br />
shift and their mechanical design and high resonant frequency<br />
ensures accurate data.<br />
Automakers worldwide<br />
Starting in the mid-1970s, <strong>Endevco</strong> accelerometers<br />
have been used for automotive safety testing for<br />
development and certification to government<br />
standards. As the success of the US car companies<br />
grew in safety ratings, the rest of the world learned<br />
to adopt the same methods, standards, and highly<br />
reliable test equipment. Today, automakers<br />
throughout the world recognize <strong>Endevco</strong> 7264<br />
series accelerometers as the gold standard for<br />
crash testing, whether used for ATD (crash dummy)<br />
measurements or on-vehicle sensing.<br />
Specifications 2262A 7231C 7264 7264B 7264C 7264D 7265A 7268C 7269 7286 7287 7302BM4<br />
Description<br />
DC response<br />
Critically damped<br />
Rugged<br />
Auto crash standard<br />
DC response<br />
Undamped<br />
DC response<br />
Undamped<br />
DC response<br />
Undamped<br />
Auto & flutter test<br />
DC response<br />
Undamped<br />
Meets J211 spec<br />
DC response<br />
Undamped<br />
Meets J211 spec<br />
DC response<br />
Low frequency<br />
Motion studies<br />
Triaxial<br />
Miniature<br />
DC response<br />
Triaxial<br />
Surface mount<br />
DC response<br />
DC response<br />
Small size<br />
Rugged<br />
DC response<br />
Small size<br />
Rugged<br />
Angular<br />
Rotational<br />
Undamped<br />
Linear range g ± 1000 / ± 2000 ± 750 ± 200 / ± 2000 ± 500 / ± 2000 ± 500 / ± 2000 ± 2000 ± 100 ± 500 / ± 2000 ± 500 / ± 2000 ± 2000 ± 2000 50 000 rad/sec 2<br />
Sensitivity Typical mV/g 0.5 / 0.25 0.15 / 0.30 2.5 / 0.25 0.80 / 0.20 0.80 / 0.20 0.20 5 0.80 / 0.20 0.80 / 0.20 0.003 0.2 5 mV/krad/sec 2<br />
Shock limit g 2500 / 5000 2500 2000 / 5000 5000 / 10 000 5000 / 10 000 10 000 1000 5000 / 10 000 5000 / 10 000 10 000 10 000 2500 linear<br />
Frequency response ±5%, Hz 1500 / 3000 2000 1000 / 4000 3000 / 5000 3000 / 5000 6000 800 3K (Z), 1500 (X&Y) 3000 / 4000 4000 4000 3 to 1600<br />
Min temperature ˚C (˚F) -18 (0) -18 (0) -18 (0) -40 (-40) -18 (0) -18 (0) -18 (0) -18 (0) -18 (0) 10 (50) 10 (50) -18 (0)<br />
Max temperature ˚C (˚F) 93 (200) 66 (150) 66 (150) 93 (200) 66 (150) 66 (150) 66 (150) 66 (150) 66 (150) 30 (86) 30 (86) 121 (250)<br />
Weight gram 28 24 1 1 1.4 1.4 4.7 8 0.4 < 1 < 1 35<br />
Signal/ground isolation Yes Selectable Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes<br />
Hermetic seal Yes No No No No No Yes No No No No No<br />
Mounting method Stud Stud Screw Screw Screw Screw Screw Screw Adhesive Adhesive Adhesive Screw<br />
Piezoresistive accelerometers 15
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