The distinguishing feature of this series is its extremely durable design, which incorporates Silicon Designs own proprietary MEMS chip development and fabrication, for an “industry best in class” MEMS variable capacitance accelerometer with up to 2,000 hours of measurement stability, in temperatures as high as +175°C, with 6,000 g shock survivability and zero signal degradation.

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Expressly designed as a high-performance, pin-compatible drop-in replacement for the company’s best-selling model 1210 and 1221 series, the new Silicon Designs model 1521 series features non-ferrous construction and a highly durable nitrogen-damped MEMS sensing element, housed within a miniature hermetically sealed gold ceramic 20-pin LCC or JLCC package. All Silicon Designs accelerometers feature a custom integrated circuit with onboard sending amplifier and differential output stage, with a 0.5 to 4.5V single-ended or ±4V differential output, proportional to the amount of measured acceleration. Series units can respond to either DC or AC acceleration. Each accelerometer is fully calibrated and traceable.

The model 1521 series is available in standard measuring ranges from ±2 g to ±200 g, with nominal frequency response, either from 0 to 400 Hz (±2 g) or 0 to 3000 Hz (±200 g). The Silicon Designs model 1521 series is also insensitive to temperature changes and gradients, with signal output unaffected by electromagnetic interference, and requiring no warm-up period. The ±2 g version of this series is further offered with very low noise floor, in direct support of seismic and other low-frequency vibration measurements.

With its superior performance characteristics, the Silicon Designs model 1521 series offers improved long-term measurement stability and repeatability, making it ideal for extended-use shock and vibration measurement applications, particularly within harsh environments. Supported applications include oil and gas downhole monitoring; UAV inertial measurements; tilt and position measurements for antennas, solar panels, wind turbines, hydroelectric spillway doors, and elevators; civil structure seismic monitoring; industrial vibration monitoring and analysis; robotics; and machinery control.

Low-to-medium sized quantities of the model 1521 series are available for immediate customer shipment. Most orders can be shipped within 1-2 business days. Larger standard range quantities are available with three-week lead times. Expedited lead times are available upon request. In addition, all model 1521 series orders received in 2013 are eligible to receive a free extended two-year comprehensive product line warranty.

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