What is the function of the chip detector sensor?

The function of the chip detector sensor is to detect metallic particles in the oil. This sensor plays a crucial role in monitoring the health and integrity of an aircraft's engine or gearbox. By identifying the presence of metal fragments, the chip detector can indicate wear or potential failure within the mechanical components. This early detection allows for timely maintenance or repairs, thereby preventing more serious damage or catastrophic failure.

In contrast, the other functions listed do not align with the purpose of a chip detector sensor. Monitoring fuel levels, measuring oil temperature, and checking battery voltage involve different sensors and systems designed for those specific tasks. These functions are essential for overall operation but are outside the scope of what the chip detector sensor is monitoring. Hence, the correct answer focuses specifically on the chip detector's role in enhancing safety and performance through proactive maintenance measures.