14 Matching Annotations
  1. Jan 2023
    1. how to use low-cost sensors to provide real-time, local-scale air quality information. EPA and state and local agencies face persistent challenges meeting such air quality information needs, including challenges in understanding the performance of low-cost sensors.

      GAO statement on low cost senstors

    1. ince September 17, the extens

      HoLU sensor kits, some dutch talk about calibration that needs to be translated, but seems to confuse collocation correction with calibration

    1. Sensor technology is getting cheaper and better. Sensors to measure air quality are also

      second version of dutch HOLU-kit

    1. f you have a sensor kit from Hollandse Luchten, we urge you to disconnect the humidity meter. We recently found out that the humidity

      They quit using these HoLu kits as the data was unrealiable. Here they were removing the humidity sensor as it was causing some problems

    1. ost commercially available sensors are expensive, and cannot be altered orextended to accommodate your specific data collection needs. In open hardware

      open hardware approach (2018) from Waag group

    1. These ‘HoLu kits’ are being distributed in pilots to residents who live in regions where the air quality is poor, such as around the Tata steel factory in the IJmond area. We teach citizens to measure the surrounding air quality and to interpret the data.

      Smart Citizen Lab aspart of Waag.

      pay attention to the HoLu project

  2. Dec 2022
    1. Project description sensortoolkit - Air Sensor Data Analysis Library

      EPA sensor toolkit read the docs with python code

    1. It is a standard practice to test 3 or more identicalsensors at the same time because

      use of three sensors

    2. , the U.S.EPA published reports (hereincalled ‘Targets Reports’) thatprovide recommendations on howto evaluate air sensors thatmeasure criteria pollutan

      EPA target reports

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