•40 000 Hz resonant frequency
•Mechanical overtravel stops
•Small size, rugged
•Crash and shock testing
•2000 g full scale range
•DC response – long duration transients
The Endevco® model 7264D is a very low mass piezoresistive accelerometer weighing only 1 gram. This accelerometer is designed for crash testing, rough road testing and similar applications that require minimal mass loading and a broad frequency response. This accelerometer meets SAEJ211 specifications for instrumentation for impact testing and SAEJ2570 specification for anthromorphic testing. It is a direct replacement for the Endevco model 7264-2000 and 7264C in that the location of the center of seismic mass is the same.
The model 7264D utilizes an advanced micromachined sensor which includes integral mechanical stops. This model has a greatly improved resonant frequency ( >40 000 Hz) and frequency response which captures more data and avoids spurious noise. The model 7264D has minimum damping, thereby producing no phase shift over the useful frequency range. With a frequency response extending down to dc (steady state acceleration) this accelerometer is ideal for measuring long duration transient shocks.
This accelerometer has a full bridge circuit with fixed resistors for shunt calibration. Full scale output is 400 mV with 10 Vdc excitation. Each unit performs with < 1% transverse sensitivity and ZMO of < ± 25 mV.
Endevco model 126 and 136, bench-top 3 channel DC amplifiers, and model 436, a3 channel DC amplifier modular card are recommended as signal conditioner andpower supply. U.S. Patents 4,498,229 and 4,605,919 apply.