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;

Carbon Monoxide - CO 

Hazard:                               Flammable               Will explode; LEL 12.5%

Classification:                   Health                         Extremely toxic

Synonyms:                         Carbon oxide, flue gas, monoxide

Exposure limits:               (OSHA) PEL\TWA: 50 ppm

                                            (ACGIH) STEL: 400 ppm/ 15 min.

                                            (OSHA) IDLH: 1500 ppm / 30 min.  

Industries:                         steel mills, fire departments, garages, loading docks, electrical utilities, and general industries         

Carbon monoxide is a colorless gas. To the human senses it is invisible. Carbon monoxide is a byproduct of combustion and will appear naturally in any situation where burning has taken place.

Carbon monoxide is a highly toxic gas which is termed a toxic asphyxiant, meaning it reduces the oxygen transport properties of the blood. It reacts with the hemoglobin in the blood forming carboxyhemoglobin which prevents the hemoglobin from transferring oxygen. Low PPM doses of carbon monoxide can cause headaches and dizziness. If the victim is removed to fresh air no permanent damages will result. High doses can be fatal.

Effects of Various CO Levels

Carbon Monoxide Level in PPM        Resulting Conditions on Humans

50                                         Permissible Exposure Level for 8 hours (OSHA).

200                                      Possible mild frontal headache in 2 to 3 hours.

400                                      Frontal headache and nausea after 1 to 2 hours. Occipital after 2-1/2 to 3-1/2 hours.

800                                      Headache, dizziness, and nausea in 45 minutes. Collapse and possible death in 2 hours

1,600                                   Headache, dizziness, and nausea in 20 minutes. Collapse and death in 1 hour.

3,200                                   Headache and dizziness in 5 to 10 minutes. Unconsciousness and danger of death in 30 minutes

6,400                                   Headache and dizziness in 1 to 2 minutes. Unconsciousness and danger of death in 10 to 15 minutes.

12,800                                 Immediate effects-unconsciousness. Danger of death in 1 to 3 minutes.