Is it less than half that can correctly measure the cheap CO2 sensor, CO2 concentration?The shocking experimental results are announced [Yajima Watch] --NTERNET WATCH

Yajima Watch

August 11, 2021 06:00

　Electric and communication universities have released poorly distinguish products for CO2 sensors, which are often used in commercial facilities, etc., as a guide for ventilation.

　As a guide for ventilation in the room, it is a CO2 sensor that has been introduced due to corona evil, but it is difficult to judge whether it is working correctly.This time, when the research team at the University of Telecommunications University has verified inexpensive CO2 sensors under 5,000 yen or less sold on the EC site for infectious diseases, 67 % of the total are poor products that do not respond to CO2.It turned out to be.The university publishes this fact and can simply check that the purchased CO2 sensor can correctly measure the CO2 concentration, which can display a value of around 400 pm with fresh air, and breathe when it breaks.The value of the PPM to the value increases, and the PPM does not rise by approaching the hand with disinfecting alcohol -these three points.