Which of the following statements is true regarding detector sensitivity testing?

Detector sensitivity testing is a crucial procedure in ensuring that smoke detectors function correctly and reliably. The correct choice indicates that such testing cannot be performed with unmeasured aerosol concentrations. This is significant because sensitivity testing aims to determine how effectively a detector responds to defined concentrations of smoke or other particulates. Using unmeasured aerosol concentrations would yield unreliable results, preventing the necessary calibration of the detector's response.

A proper sensitivity test requires precise measurements so that the detector's functionality can be assessed against established standards. It ensures that the detector will activate at the appropriate smoke levels, providing reliability in fire detection and safety systems. If the aerosol concentration is unmeasured, it creates uncertainty in determining whether the detector meets the required sensitivity thresholds, thus undermining the testing process.

Through proper methodology, including validated measurement techniques, testing organizations can ensure detectors are adequately sensitive to real fire conditions, further safeguarding safety protocols.