Product category:
Accelerometers and Vibration Sensors
News Release from: Endevco | Subject: Model 71 series
Edited by the Engineeringtalk Editorial
Team on 14 August 2006
Accelerometer survives high-frequency
shocks
Subminiature surface mount accelerometer suits extreme aerospace and test and measurement applications.
New from Endevco Corporation, the model 71 series surface mount accelerometer is a subminiature addition to the existing line of industry leading high shock sensors for the most extreme aerospace and test and measurement applications The Endevco model 71 series of subminiature SMT piezoresistive accelerometers features a rugged, undamped design for shock measurements from 6000 to 60,000g and sensitivities from 3 to 30uV/g
This article was originally published on Engineeringtalk on 31 Mar 2003 at 8.00am (UK)
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The internal sensing system is micromachined from a single piece of silicon and includes the inertial mass and strain gauges arranged in an active four-arm Wheatstone bridge circuit complete with an innovative on-chip zero balance network.
The low mass, extremely small size and unique construction of the sensing element blends an exceptionally high resonant frequency with characteristics such as low output impedance, high over range and zero damping for no phase shift.
The high resonant frequency of these sensors permits their survival in the presence of the high frequency components in a shock pulse that would shatter the seismic system of lower quality accelerometers.
With resonant frequencies from 180 to 700kHz and zero damping, the 71 series responds accurately to the fast-rise-time, short-duration shock events typical of munitions fusing, kinetic impact testing and high shock component test applications.
With a frequency response extending down to DC, these transducers are ideal for measurement of long duration transients.
And they permit integration of the acceleration data to obtain velocity and displacement measurements.
"The model 71 is an excellent example of Endevco's transducer engineering team and our MEMS manufacturing team working closely together to develop the type of unique, high-performance solution for a very challenging application which Endevco is known for", stated Bruce Putman, Market Segment Director, Aerospace and Defense.
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