MEMS Accelerometers and Yearly Calibration

A handheld portable vibration data collector typically uses a piezoelectric sensor. Normally this would require a calibration every year or two, as a piezo crystal output can drift over time. MEMS (Micro-electromechanical systems) accelerometers do not require recalibration every year which make it ideal for use in a wireless vibration sensor. Why is this?

• Alan McCall
• Sensoteq