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Meggitt rolls piezoresistive shock accelerometer

Posted: 01 Sep 2011 ?? ?Print Version ?Bookmark and Share

Keywords:shock accelerometer? piezoresistive? leadless chip carrier?

Meggitt Sensing Systems has revealed the Endevco model 72-60K piezoresistive shock accelerometer that is designed to support high-reliability acceleration, vibration and shock measurements. The device offers a 60,000g measurement range, light gas damping and four times over-range shock survivability.

The series features a patented, monolithic, four-active arm bridge circuit design integrating Meggitt's own proprietary sensing element. The element is housed in a low profile, miniature, seam sealed leadless chip carrier (LCC) package, weighing 0.16g for minimized mass loading effects and ease of SMT mounting. Included integral mechanical stops at a minimum of 2X allow for 1.5X linear over-range for increased ruggedness and reduced likelihood of breakage under overload conditions. The Endevco model 72 also offers a Class 3 rating (>4000 VCHuman Body Model) and ESD protection against potential process damage, the company said. A combination of light gas damping and mechanical over-travel stops serves to attenuate resonance and dramatically enhance shock survivability, even in applications where actual shock levels may not be known. All units are fully factory tested at full-scale range to ensure minimal zero shift after shock, ensuring their reliability and performance within demanding environments, the company added.

- Julien Happich
??EE Times

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