What is "sensor drift"?

Sensor drift refers to a gradual change in a sensor's output signal over time, which occurs even when the measured variable remains constant. This phenomenon can result from various factors such as temperature fluctuations, aging components, or changes in environmental conditions. As sensors age or experience various operational conditions, their output may begin to deviate from the true value, leading to inaccuracies in the measurements they provide. Understanding sensor drift is vital for maintenance and calibration processes, ensuring that control systems remain reliable and accurate.

This answer highlights the nature of sensor drift as a gradual and ongoing issue which impacts sensor performance, distinguishing it from other potential sensor-related problems such as sudden failures or issues related to processing speed or calibration distance.