Bruel & Kjaer UK Ltd. - PRODUCT NEWS

Model 7251HT High Temperature Miniature ISOTRON Piezoelectric Accelerometer designed specifically for measuring vibration on most structures. Endevco's new Model 7251HT-10 and -100 is a miniature piezoelectric accelerometer with integral electronics that measures vibration on most structures at temperatures continuously up to 150°C (302°F). The low-profile unit is hermetically sealed against environmental contamination, and offers high output sensitivity and wide bandwidth. Dynamic range is ±500 g's for the -10 model and ±50 g's for the -100 model, while voltage output sensitivity is 10 mV/g for the -10 model and 100 mV/g for the -100 model. This new lightweight (14 gm) design effectively minimizes mass loading effects and is ideal for general-purpose and aerospace applications. The Model 7251HT features Endevco's PIEZITE Type P-8 crystal element, operating in annular shear mode, which exhibits low base-strain sensitivity and excellent output stability over time. An internal hybrid signal conditioner incorporated in a two-wire system transmits its low-impedance voltage output through the same cable that supplies the constant-current power. Signal ground is connected to the accelerometer's outer case, and when the unit is used with the supplied isolated mounting screw, is electrically isolated from ground. The centrally located mounting bolt permits 360° cable orientation, a very desirable feature for many applications. Endevco's Signal Conditioner Models 133, 2792B, 4416B, 2793, 2775A or OASIS Computer-Controlled System are recommended for use with the Model 7251HT accelerometer. In the UK Endevco catalogue products are marketed and sold by Bruel & Kjaer UK Ltd. __________________________________________________ For more information, please contact :- Bruel & Kjaer UK Ltd. Bedford House, Rutherford, Close, Stevenage, Herts. SG1 2ND. UK Tel: +44(0) 1438 739000, Fax: +44(0) 1438 739099 E-mail: Website: October 2002
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