Tiandi first and share with you the gas detector using small common sense
Gas detection alarms use small common sense 1. ppm: volume concentration, which represents the volume of pollutants contained in one million volumes of air. 2. %LEL: indicates the explosive limit unit. Generally, the lower explosion limit of a certain gas is measured in the gas detection product. Third, %VOL: indicates the volume ratio of gas concentration, this unit is very large 4. Examples of common concentration units: (methane gas) upper explosion limit% (v/v) 15.4 lower explosion limit % (v/v) 5.0 Example: 5.0% VOL=100% LEL=50000PPM 5. Other gases are also converted according to Article 4. 6. Mg/m3: indicates the mass of pollutants contained in each cubic air. Seven, conversion format (mg / m3) = m / 22.4 * ppm Eight, conversion format ppm = (mg / m3) / (m / 22.4) Nine, the upper format: m- is the molecular weight of the gas, ppm-measured volume concentration value, T-temperature, Ba-pressure, which is the standard algorithm, but in our actual calculation work, temperature and pressure can be ignored, in order to calculate And easy to remember, you can refer to the seventh item Dressing Table ,Dressing Table With Storage,Modern Dressing Table,Small Vanity Table shandong Changheng Wood Co.,Ltd , https://www.changhengwood.com