How can the proper operation of a leakage detector in a monitoring vehicle be verified?

Creating a test leak is the most effective method for verifying the proper operation of a leakage detector in a monitoring vehicle because it allows for a controlled and measurable assessment of the detector's response to leaks. When a test leak is initiated, the detector should provide an alarm or indication if it is functioning correctly, thus confirming its sensitivity and operational status. This practical approach simulates real-life conditions that the detector would encounter in the field, ensuring that it is capable of detecting actual leaks effectively.

Adjusting sensitivity settings can influence the sensor's operation but does not directly verify its functionality; it only alters its response threshold. Conducting a visual inspection may help verify the physical integrity of the detector but does not confirm its performance or sensitivity to actual leakage. Replacing the batteries is essential for maintenance but does not itself verify the effectiveness of the leakage detection function, as the detector may still not perform correctly even with fresh batteries. Therefore, creating a test leak provides a direct and practical way to ensure the leakage detector is working as intended.