Piezoelectric accelerometers with iTEDS support larger channel count low-frequency vibration measurements

May 25, 2012 // By Paul Buckley
Meggitt Sensing Systems, a Meggitt group division, has introduced Endevco models 752A12 and 752A13, a family of low noise, low weight, single axis ISOTRON accelerometers with integral Transducer Electronic Data Sheet (iTEDS) capabilities, per IEEE-P1451.4.

The devices are designed to support a variety of larger channel count, lower frequency vibration measurements, including automotive transmission testing, ride quality, NVH and component durability testing; seismic measurements of buildings, equipment and civil structures; vibration monitoring of heavy machinery and equipment; and general in-laboratory testing.

Available in high sensitivities of 100 mV/g and 1000 mV/g, respectively, the stable performance of Endevco models 752A12 and 752A13 are due to the incorporation of Meggitt’s own proprietary piezoelectric crystal sensing element, operating in annular shear mode, allowing for low base strain sensitivity. Low-frequency measurement capabilities are due to amplitude responses of 0.05 to 10,000 Hz (±1 dB) (model 752A12); and 0.3 to 10,000 Hz (±1 dB) (models 752A13). The device’s lightweight (13 gm) and compact size minimizes mass loading effects. In addition, as self-generating devices, these accelerometers require no external power source for operation.

Units are shipped with the Endevco model 3061A-120 low-noise cable and 2981-12 mounting studs for easy installation. Recommended accessories, sold separately, include the use of directly compatible signal conditioning electronics, such as the models 133, 2775B, 2793, and 4406B; or the model 6634C vibration amplifier; or multi-rack mounted modular signal conditioning system models 4990a (Oasis) and 4999. Other mounting studs, such as the models 2981-3, 15071 and 2981-4, are also recommended.

Endevco models 752A12 and 752A13 are accompanied by a comprehensive five-year product warranty, with quantities available for immediate shipment under Meggitt’s Endevco Guaranteed In Stock program. They are also available at specially discounted rates as part of the –R replacement sensors program.

Visit Meggitt Sensing Systems at www.meggittsensingsystems.com