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MEMS capacitive accelerometers offer precision, sensitivity and low noise

22 June 2011

Kistler's new single-axis MEMS capacitive accelerometers make use of the company's K-Beam technology to deliver precision, sensitivity and low noise characteristics for a range of automotive, aerospace, OEM, R&D and general laboratory test applications. Type 8315A series comprises six models with measurement ranges from ±2g to ±200g and a frequency response of zero to 1,000Hz (5%), all housed in a compact package.

The MEMS variable capacitance sensing element consists of a small inertial mass located between two parallel plates.  Deflection of the inertial mass under acceleration causes a proportional change in the capacitance of the sensing element. An integrated analogue signal conditioner converts this change to a proportional voltage output. The excellent thermal stability of the MEMS construction provides reliable performance within the wide operating temperature range of -55 to +125C.

Three housings are available: one lightweight, environmentally sealed, hard anodized with integral ground isolation and two welded titanium housings with either an industry standard 4-pin connector or a Teflon coated cable.

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