PurpleAir PA-II-FLEX VOC

General Description

The PurpleAir PA-II-FLEX is an air quality monitoring device that provides real-time measurements of PM_1.0, PM_2.5 and PM­₁₀ mass concentrations, VOC index values and environmental parameters such as temperature and relative humidity.  Data can be accessed and downloaded on the PurpleAir website. This webpage specifically is for the VOC sensor component of the PurpleAir PA-II FLEX. For particulate matter performance, please refer to our Criteria Pollutant version of this webpage.

Principle of Operation

The PurpleAir PA-II-FLEX contains either a Bosch BEM680 or BME688 T/RH/VOC metal oxide sensor. VOC is detected by adsorption to the sensor’s metal oxide layer and the intensity of the signal should be proportional to the concentration of VOC. The raw sensor signal is converted to an index for air quality by the sensor’s algorithms.

Features

• Dimensions: 85 (L) x 85 (W) x 125 (H) mm
• Weight: 12.6oz (357g)
• Power supply: Yes, 5V DC micro USB, 0.18A continuous, 600mA peak
• Battery: No
• Clock function: Yes
• Sampling mechanism: fan
• Environmental operating conditions: N/A
• Internal data logging: Removable SD card
• Data communication: Wi-Fi
• Data logging/retrieval: Data can be retrieved on the PurpleAir website or API
• Weatherproof: Yes, IP68

Applications

• Indoor air quality monitoring

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