Issue: Aug 2013


Triaxial Isotron Accelerometer for Wide Range of Aerospace and Industrial Testing Applications



by James Hilton

Meggitt Sensing Systems, a Meggitt group division and leader in sensing and monitoring systems for extreme environments, has announced the global market launch of the Endevco model 7253D triaxial Isotron accelerometer designed for applications requiring the measurement of shock and vibration simultaneously in three mutually perpendicular axes. Primary applications for the Endevco model 7253D include the testing of aircraft engines, industrial engines, missiles, aircraft/engine/weapons components, spacecraft components, flight testing and industrial machinery.

Available in sensitivities of 10 mV/g or 100 mV/g, the Endevco model 7253D is small and lightweight with a broad frequency response. Features include thru-hole mounting for 360? cable orientation, hermetically sealed titanium housing to protect against environmental contamination, and signal ground isolated from the mounting surface by a hard anodized insulator. Dimensions are low-profile at 0.70" x 0.70" x 0.375", with a weight of <10 grams and operating temperature range of -67?F to +257?F (-55?C to +125?C).

Each axis utilizes an Endevco type P-8 shear piezoelectric sensing element in conjunction with a hybrid charge amplifier to provide a low-impedance output of ?5 volt full scale in a two-wire IEPE system configuration. A constant current excitation of 2 to 20 mA is required for each axis, with the electrical connection made to each axis through a 4-pin connector.

Accessories included with the Endevco model 7253D include the 3027AM3-120 cable, 42883 mounting screw assembly and EHM488 wrench. Optional accessories include the models 123, 133, 2775B or 2793 signal conditioner.

The Endevco model 7253D offers a more compact form factor, lighter weight and wider frequency response compared to similar products available on the market today. And it is covered by a five-year comprehensive product warranty.

For more information on the Endevco product line, visit www.endevco.com. For full details on all Meggitt Sensing Systems products, visit www.meggittsensingsystems.com.

About Meggitt Sensing Systems
Meggitt Sensing Systems, a Meggitt group division (www.meggitt.com), is a leading supplier of high-performance sensing and monitoring systems for physical parameter measurements in extreme environments. It has operated since 1927 through its antecedents ECET, Endevco, Ferroperm Piezoceramics, Lodge Ignition, Sensorex, Vibro-Meter and Wilcoxon Research whose portfolios form the basis of product lines offered by todays Meggitt Sensing Systems. Meggitts Endevco range of piezoelectric, piezoresistive, Isotron and variable capacitance accelerometers, piezoresistive pressure transducers, acoustic sensors, electronic instruments and calibration systems ensure critical accuracy and reliability within aerospace, automotive, defense, industrial, medical, power generation, R&D, space and test and measurement applications. Endevco and Isotron are registered trademarks of the Meggitt group. All other trademarks are property of their respective owners.


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