How many valves are present on a Draeger Multi-Gas Detector?

• A. One
• B. Two
• C. Three
• D. Four

Answer: (B)

The Draeger Multi-Gas Detector is designed to detect multiple gases simultaneously and is equipped with two valves. One of these valves is typically used for sampling and the second for purging or calibration, allowing for more effective monitoring and accurate readings in various environments. This design helps ensure efficient operation and reliable performance when assessing potential hazardous gas levels in the field. The implementation of two valves is crucial for maintaining both functionality and safety, which further emphasizes the device's effectiveness in hazardous environments.

The other options do not reflect the correct number of valves present in the device, as the instrument's functionality relies specifically on having two distinct valves to support its operational requirements.