Abstract Recent technological advancements have enabled the development and deployment of low-cost consumer grade monitors for ubiquitous and time-resolved indoor air quality monitoring. With their reliable performance, this technology could be instrumental in enhancing automatic controls and human decision making. We conducted a comprehensive performance evaluation of eight consumer grade multi-parameter monitors and eight single-parameter sensors in detecting particulate matter, carbon dioxide, total volatile organic compounds, dry-bulb air temperature, and relative humidity. In the controlled chamber, we generated eight air pollution sources, each at two thermodynamic conditions — cool and dry (20 ± 1 °C, 30 ± 5%), and warm and humid (26 ± 1 °C, 70 ± 5%). The majority of tested devices under-reported reference particle measurements by up to 50%, provided acceptable responses for carbon dioxide within 15% and diverging results with poor quantitative agreement for total volatile organic compounds. Despite the reported disparities in quantitative agreements, most of the low-cost devices could detect source events and were strongly correlated with the reference data, suggesting that these units could be suitable for measurement-based indoor air quality management. Most of the tested devices have also proven to competently measure air temperature (within+/-0.6 °C) and relative humidity (within+/-5% RH) and maintained a stable measurement accuracy over the two thermodynamic conditions.

中文翻译：

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在可变的室内空气质量和热条件下对低成本环境监测器和单个传感器的性能评估

摘要 最近的技术进步使低成本消费级监测器的开发和部署成为可能，用于无处不在的时间分辨室内空气质量监测。凭借其可靠的性能，该技术可有助于增强自动控制和人工决策。我们对八个消费级多参数监测器和八个单参数传感器在检测颗粒物、二氧化碳、总挥发性有机化合物、干球空气温度和相对湿度方面进行了综合性能评估。在受控室内，我们产生了八个空气污染源，每个空气污染源处于两种热力学条件——凉爽干燥（20±1°C，30±5%）和温暖潮湿（26±1°C，70±5%） . 大多数经过测试的设备低于报告的参考粒子测量值高达 50%，对 15% 以内的二氧化碳提供了可接受的响应，并且对于总挥发性有机化合物的定量一致性较差，结果不同。尽管报告的定量协议存在差异，但大多数低成本设备都可以检测源事件并与参考数据密切相关，这表明这些设备可能适用于基于测量的室内空气质量管理。大多数经过测试的设备还被证明可以胜任测量空气温度（+/-0.6 °C 以内）和相对湿度（+/-5% RH 以内），并在两种热力学条件下保持稳定的测量精度。尽管报告的定量协议存在差异，但大多数低成本设备都可以检测源事件并与参考数据密切相关，这表明这些设备可能适用于基于测量的室内空气质量管理。大多数经过测试的设备还被证明能够胜任测量空气温度（+/-0.6 °C 以内）和相对湿度（+/-5% RH 以内），并在两种热力学条件下保持稳定的测量精度。尽管报告的定量协议存在差异，但大多数低成本设备都可以检测源事件并与参考数据密切相关，这表明这些设备可能适用于基于测量的室内空气质量管理。大多数经过测试的设备还被证明可以胜任测量空气温度（+/-0.6 °C 以内）和相对湿度（+/-5% RH 以内），并在两种热力学条件下保持稳定的测量精度。