Tiny piezoelectric accelerometer
Meggitt's Endevco model 25A, the smallest Isotron piezoelectric accelerometer is designed for very small structures and other objects. With a total weight of just 0.2 gram, the lightweight design effectively reduces unwanted mass loading effects.
Meggitt Sensing Systems, a Meggitt group division, introduced the Endevco model 25A, the world’s smallest Isotron (IEPE-type) piezoelectric accelerometer, designed to support high-reliability vibration measurement requirements on very small structures and objects. With a total weight of just 0.2 gram, its lightweight design effectively reduces unwanted mass loading effects.
Featuring a durable shear mode construction, the Endevco model 25A reportedly incorporates integral electronics which convert high-impedance input into a low-impedance voltage output through the same cable that supplies the required 4 mA constant current power. 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, allowing for immediate field use. If required, a new assembly lead may also be reinstalled at the factory. A heavier gage (28 AWG) cable is also provided for extension purposes. In addition, an optional triaxial mounting block (model 2950M16) is available to facilitate three-axis vibration measurement requirements. Units are adhesive mounted with a special field removal tool (model 31275) supplied for convenience.
With its small size and exceptional performance attributes, the Endevco model 25A is 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. Recommended optional accessories, sold separately, include the model 133 three-channel piezoelectric signal conditioner; the model 4416B low-noise, compact signal conditioner; the model 2775B PE, Isotron and RCC signal conditioner; the model 6634C vibration amplifier; the model 4999 multi-channel signal conditioner; or the Oasis 2000 (4990A-X with cards 428 and/or 433) computer controlled system.
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Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.
There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.
But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.
Read more: 2015 Salary Survey