What indication tells the user the MultiRAE Pro pump is working properly?

What indication tells the user the MultiRAE Pro pump is working properly?

• A. Single green LED
• B. No indication is shown until alarm
• C. Audible beep
• D. Alternating set of 2 icons

Answer: (D)

The pump’s operating status is shown by an alternating set of two icons on the display. When you see these icons cycling, it indicates the pump is actively drawing air and sampling, so you can trust the system is functioning properly. This is more direct and reliable than a single green LED (which might simply indicate power or battery), an audible beep (which could signal alarms or other events and isn’t specific to pump operation), or waiting for an alarm to appear (which wouldn’t tell you about pump health before a problem occurs). In practice, confirming the pump is running before use ensures air is actually being drawn to the sensors, so you get accurate readings. If the alternating icons aren’t visible, check the pump, tubing, flow path, and battery and restart as needed.

The pump’s operating status is shown by an alternating set of two icons on the display. When you see these icons cycling, it indicates the pump is actively drawing air and sampling, so you can trust the system is functioning properly. This is more direct and reliable than a single green LED (which might simply indicate power or battery), an audible beep (which could signal alarms or other events and isn’t specific to pump operation), or waiting for an alarm to appear (which wouldn’t tell you about pump health before a problem occurs). In practice, confirming the pump is running before use ensures air is actually being drawn to the sensors, so you get accurate readings. If the alternating icons aren’t visible, check the pump, tubing, flow path, and battery and restart as needed.