Why use A37 CO2 Meter?
A37 CO2 Meter
A37 is used to detect CO2 concentration in different environments. The LCD displays CO2 concentration, temperature, humidity, and date/time together. Air quality is indicated with emoticons. When CO2 concentration gets too high, audio and visual alarm will go off.
A carbon dioxide (CO2) sensor is a device used to measure the concentration of carbon dioxide gas in the atmosphere. It is measured using “parts per million” (ppm) and typically has a presence of around 400 ppm.
This 0.01% (100 ppm) change is outside the 100-300 ppm range of accuracy of a typical 100% CO2 sensor. The sensor would probably not record any change. However, the accuracy of a 10,000 ppm NDIR sensor is around 50 ppm (0.005%).