Be sure to calibrate your CGI with natural gas at the correct intervals per the manufacturer specifications to ensure it operates as designed.

If gas concentrations are well below the lower explosive limit of 5% and you can enter the building without risk, check for natural gas in the following locations:

• The areas where any underground water, sewer, electric, or drain lines enter the building
• The regulator, meter bar, and all piping that supplies natural gas as well as the piping around all gas-fired appliances, such as water heaters and clothes dryers
• The spot where the gas service enters the building
• Any cracks in the wall
• All high points in the ceiling where natural gas could collect