Welcome Guest
Welcome Guest

NO2Nitrogen Dioxide


STEL: 1ppm (Short Term exposure Limit - 15mins)

TWA: 0.5ppm (Time Weighted Average - 8hrs)


Alarm Recommendations
Rising Latching Alarms for Life Safety Applications

First Alarm: Second Alarm: Third Alarm:
0.5ppm 1ppm Optional

Nitrogen Dioxide (NO2)Molecule | Nitrogen Dioxide Detector/NO2 Detector

Nitrogen Dioxide (NO2)

Nitrogen Dioxide (NO2) is an extremely toxic gas, readily detected by its acrid Chlorine like smell at low concentrations. Concentrations as low as 4ppm can anaesthetise the nose leading to a false sense of security and over exposure. Additionally it will readily combine with water to form Nitric Acid. As it is a component of vehicle and power station exhaust gases it is a major factor in acid rain. It is readily combines with water to form Nitric acid and as such attacks mucous membranes in the nose and throat.

Sources of NO2:

  • vehicle exhausts
  • Thermal power stations
  • pulp mills
  • butane heaters
  • gas stoves.

NO2 is also produced in industry being used as an inhibitor to prevent polymerisation of acrylates during distillation; as a nitrating agent for organic compounds; as an oxidising agent; as a rocket fuel; as a flour bleaching agent and in increasing the wet strength of paper.


IGD’s Nitrogen Dioxide Detector Solutions:

IGD has a wide range of NO2 Detector solutions, ideal for any application, including our ground breaking 2-Wire ™ Addressable Nitrogen Dioxide Detectors:

  • 2-Wire™ Safe Area Addressable NO2 Detector
  • 2-Wire™ ATEX Addressable Nitrogen Dioxide Detector
  • Legacy 4-20mA Nitrogen Dioxide Detector
Got a question? Click here to send us an emailClipboard