The Model 1522 series provides reliable vibration and acceleration measurements within more thermally demanding zero-to-medium frequency applications, such as those characterized by large or rapid temperature fluctuations; or, where high or low temperature extremes must otherwise be maintained over an extended time frame. The accelerometers also provide superior bias and scale factor performance over an expanded operating temperature range of -55 to +125°C, further responding to both AC and DC acceleration. The robust design of the Model 1522 series combines a micro-machined capacitive sense element together with a custom integrated circuit. The circuit includes both a sense amplifier and a ±4V differential output stage. An additional integral temperature sensor facilitates the self-correction of any previously characterized bias and scale factor temperature dependence for any one particular accelerometer. All accelerometer internal components are housed within a hermetically sealed and nitrogen damped LCC surface mount package. Units are also RoHS compliant. Units are 100% in-house tested, programmed, calibrated and verified within a climate chamber environment to ensure their continued measurement accuracy and reliability, particularly under thermally volatile conditions.
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