l The instrument can be equipped with dozens of kinds of sensors such as electrochemical, catalytic, non-dispersive infrared (NDIR) and photo-ionization detector (PID) sensors in order to meet users’ different demands;

l The instrument can not only display the concentration of a dangerous gas in real time but also calculate the TWA and STEL values of a toxic gas and display the results on the LCD as per corresponding instructions;

l The instrument possesses analog, digital and on/off signal outputs simultaneously;

l The ultra-large LCD screen is equipped with ultra-bright backlight, convenient for reading;

l  Its Protection Classification can exceed IP66;

Nitrogen Dioxide - NO2 

Hazard:                       Flammable            Will not explode

Classification:           Health                     Extremely toxic

Oxidizing agent

Synonyms:                Dinitrogen tetroxide, nitrogen peroxide nitrogen tetroxide, and NTO

Exposure limits:       (OSHA) PEL\TWA: 5 ppm

                                    (ACGIH) STEL: 5 ppm/ 15 min

                                    (OSHA) IDLH: 50 ppm / 30 min  

Industries:                 Mining using diesel powered machinery, garages, chemical plants

Nitrogen dioxide is a yellowish-brown gas with a characteristic pungent, acrid odor. Nitrogen dioxide is soluble in water at which time it reacts to form nitric acid. NO2 can be found in industries where the burning of diesel fuel takes place. The most toxic component in diesel emissions is nitrogen dioxide.

Nitrogen dioxide exposure in low doses can cause irritation of the eyes and throat, headache, nausea, and gradual loss of strength. High doses of NO2 can cause pulmonary edema (water in the lungs) and death.

Effects of Various NO2 Levels  

Nitric DioxideLevel in PPM                 Resulting Conditions on Humans

.2-1                                                Detectable by pungent, acrid odor

1                                                     Permissible Exposure Level (OSHA, ACGIH)

5-10                                               Irritation of the nose and throat

20                                                   Irritation of the eyes

50                                                   Maximum exposure for a 30 minute period

100-200                                        Tightness in the chest, acute bronchitis, and death from prolonged exposure