About

• Pollutant detection: They use a variety of methods, including laser scattering for particles and electrochemical or other sensors for gases.
• Real-time data: Many instruments provide immediate readings on a digital display, allowing for quick assessment and response to changes in air quality.
• Parameter measurement: Modern devices often measure multiple parameters simultaneously, including gases like
  

  COcap C cap O
  and
  

  CO2cap C cap O sub 2

  2
  , particulate matter (e.g.,
  

  PM2.5cap P cap M sub 2.5

  2.5
  ), temperature, and relative humidity.
• Application: Instruments range from small, portable devices for indoor use to large, fixed stations for continuous outdoor and industrial monitoring.
• Safety: They are critical for identifying hazardous conditions such as oxygen deficiency, flammable atmospheres, and exposure to dangerous chemicals, helping to prevent harm to personnel.