Piezoelectric Accelerometer

Meggitt Sensing Systems recently unveiled its Endevco® model 25A as the world’s smallest ISOTRON® (IEPE-type) piezoelectric accelerometer. Designed to support high-reliability vibration measurement requirements on very small structures and objects, the accelerometer weighs 0.2 g.

The Endevco model 25A piezoelectric accelerometer from Meggitt.

The Endevco® model 25A incorporates integral electronics that convert high-impedance input into a low-impedance voltage output through the same cable that supplies the required 4 mA constant current power, according to Meggitt. The signal ground is isolated from the unit’s mounting surface by a hard anodized surface.

The unit comes with two pre-installed, easily field-reparable fine gage (34 AWG) wire output leads, which allows for immediate field use. The Endevco® model 25A is said to be well-suited for measuring overall vibration levels of scaled models and smaller electronic components within aerospace, automotive, electronic products, and in-laboratory testing applications, as well as biomedical research.