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Multiple Choice

Which monitoring device is capable of detecting volatile organic compounds (VOCs)?

VOCs are organic compounds that readily vaporize and can pose inhalation and flammable hazards. A photoionization detector uses ultraviolet light to ionize many organic vapor molecules. The resulting ions create a current that the instrument measures, and the signal is proportional to the concentration of VOCs in the air. This approach works for a wide range of organic vapors, giving quick, real-time alerts in the field. Other devices aren’t designed for broad VOC detection. A multigas meter focuses on common gases like oxygen, combustible gases, hydrogen sulfide, and carbon monoxide, and may only detect VOCs if it has a dedicated VOC sensor add-on. Radiation dosimeters measure ionizing radiation, not chemical vapors, and sound level meters measure noise. So the PID or similar VOC detector is the appropriate choice for detecting volatile organic compounds.

VOCs are organic compounds that readily vaporize and can pose inhalation and flammable hazards. A photoionization detector uses ultraviolet light to ionize many organic vapor molecules. The resulting ions create a current that the instrument measures, and the signal is proportional to the concentration of VOCs in the air. This approach works for a wide range of organic vapors, giving quick, real-time alerts in the field.

Other devices aren’t designed for broad VOC detection. A multigas meter focuses on common gases like oxygen, combustible gases, hydrogen sulfide, and carbon monoxide, and may only detect VOCs if it has a dedicated VOC sensor add-on. Radiation dosimeters measure ionizing radiation, not chemical vapors, and sound level meters measure noise. So the PID or similar VOC detector is the appropriate choice for detecting volatile organic compounds.