Which device can detect Chlorine Gas?

• A. Black MultiRae Pro
• B. Yellow MultiRae Pro
• C. Any MultiRae Pro
• D. None of the above

Answer: (A)

Chlorine gas detection requires a specific sensor—an electrochemical chlorine sensor—that the detector must carry to respond to Cl2. The MultiRAE Pro family is configurable with different sensors, so whether a unit can detect chlorine depends on the installed sensor.

In this context, the black MultiRae Pro is the chlorine-capable configuration, meaning it comes with (or supports) the chlorine sensor needed to detect Cl2. The yellow version is a different configuration that may target other gases, so it isn’t guaranteed to detect chlorine. Saying that any MultiRae Pro can detect chlorine ignores the need for the correct sensor, and saying none of the above would be incorrect since a chlorine-capable version exists.

So, the black model is the best answer because it represents the configuration that includes the chlorine-detecting sensor. Always verify the installed sensors on a unit to confirm which gases it can detect.