Why does Meggitt engrave “nominal” sensitivity instead of exact sensitivity?
Meggitt engraves the nominal sensitivity on the sensor housing to assist the end user in distinguishing between different types of sensors that otherwise appear identical. Engraving the calibrated sensitivity on the sensor creates an illusion of accuracy and can be misleading in many applications. The calibrated sensitivity of an accelerometer is performed under precise conditions in a laboratory environment. When used in the field, the sensitivity will shift due to changes in temperature and frequency of interest. Changes in sensitivity with frequency can be dramatically effected by the mounting technique employed.
