Which device is commonly used to detect VOCs via photoionization?

Which device is commonly used to detect VOCs via photoionization?

• A. Photo Ionization Detector
• B. Lower Explosive Limit Detector
• C. MultiRAE Pro
• D. Calibration Device

Answer: (A)

Detecting VOCs with photoionization relies on a Photo Ionization Detector. It uses ultraviolet light to ionize many VOC molecules in the air. The resulting ions generate a current that the instrument converts into a concentration reading, giving a fast, sensitive response across a broad range of VOCs. This makes the PID the standard tool for VOC detection via photoionization. Lower Explosive Limit detectors are designed to monitor flammable atmospheres against explosive thresholds, not to measure VOCs with photoionization. The MultiRAE Pro is a versatile monitor that can include a PID sensor among others, but by itself it isn’t the specific device type dedicated to VOC detection via photoionization. A calibration device is used to calibrate instruments, not to detect VOCs.

Detecting VOCs with photoionization relies on a Photo Ionization Detector. It uses ultraviolet light to ionize many VOC molecules in the air. The resulting ions generate a current that the instrument converts into a concentration reading, giving a fast, sensitive response across a broad range of VOCs. This makes the PID the standard tool for VOC detection via photoionization.

Lower Explosive Limit detectors are designed to monitor flammable atmospheres against explosive thresholds, not to measure VOCs with photoionization. The MultiRAE Pro is a versatile monitor that can include a PID sensor among others, but by itself it isn’t the specific device type dedicated to VOC detection via photoionization. A calibration device is used to calibrate instruments, not to detect VOCs.