What does "signal drift" refer to in instrumentation?

"Signal drift" refers to a gradual change in the output signal over time, typically seen in instrumentation where the baseline or zero point of the measurement system shifts without a corresponding change in the physical quantity being measured. This phenomenon can occur due to various reasons, such as temperature changes, component aging, or electrical noise, leading to a slow and steady deviation from the expected output.

Understanding signal drift is crucial for maintaining measurement accuracy in various applications. In industries that rely heavily on precise instrumentation, recognizing and compensating for drift ensures that data remains reliable, minimizing the risk of errors in process control or monitoring. Proper calibration and regular maintenance protocols can help mitigate the effects of signal drift, ensuring that devices remain accurate throughout their operational life.