Parameters of micro air monitoring stations
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Dear experts: It’s been almost 2 years since the installation of the mini air monitoring station. The readings from some electrochemical sensors (for CO, SO2, NO2, O3) are no longer accurate, and they are also unstable. The manufacturer instructed me to use the Devine screen (the calibration screen) to adjust the parameters; I carried out the calibration on the spot and the readings became accurate, but they still seem unstable over time. What should I do?
Which one are you using? Which company is Hebei Xianhe? If it’s a domestic product, forget it; just replace the sensor
Wuxi Shihe, a domestic brand. The readings from several sensors are no longer valid.