ECI – Engineers Construction

ECI has several gas monitoring instruments for use in confined spaces and other potential hazardous environments, including:

• Four Gas Meter (O2, Explosive Gas, Carbon Monoxide, and Hydrogen Sulfide)
• Photo Ionization Detector (PID) – for detecting the presence of volatile organic compounds
• Drager Tube – for identifying the type and concentrations of a volatile organic compound

When using the 4-gas meter, the normal background levels should be:

O2 = 20.5 %     LEL = 0 %    CO = 0 ppm    HS = 0

Permissible limits are:

O2 = 19.5 to 23.5 %       LEL = 0 to 10 %      CO = 0 to 35 ppm      HS = 0 to 10 ppm

Any readings above the normal background should be a red flag warning that require further evaluation.