Which component should be inspected on the MultiRAE Pro for proper sampling?

• A. Inlet filter
• B. Battery compartment
• C. Display screen
• D. USB port

Answer: (A)

Accurate sampling relies on a clean, unobstructed inlet path in the gas monitor. The inlet filter is the component that guards the sampling line and sensor from dust and particulates. If the filter is clogged, the pump can’t pull sample at the designed flow rate, causing under-sampling and a delayed or inaccurate response, plus greater risk of sensor fouling. Inspecting and replacing a dirty or damaged inlet filter ensures the sample intake remains within spec and the readings reflect the ambient air. The other items—battery compartment, display screen, and USB port—are important for operation and data handling, but they don’t directly affect how the sample is drawn into the instrument, so they aren’t the focus when checking proper sampling.