What does a home natural gas alarm do and how does it work?

Protect your home against gas leaks by installing a gas alarm

Why a gas alarm is needed?

Natural gas as a colorless, odorless gas formed over millions of years within the Earth. Natural gas, composed mainly of methane (a highly flammable chemical), is the main heating fuel used in many countries. Gas leaks can lead to catastrophic explosions that can destroy houses and put occupants in danger. Gas leaks can occur from an improperly functioning cooking or heating appliance – or from the improper use of an appliance.

How do you know if the methane levels in your house are safe? You can buy a home natural gas alarm that will sound an alarm if gas levels exceed a safety threshold.

How does a natural gas alarm work?

The catalytic sensor is the most common combustible gas alarm type. When combustible gases are present, only the resistance of the detector element will rise, causing an imbalance in the bridge circuit, thus producing an output voltage signal (Vout). The output voltage signal is proportional to the concentration of combustible gases. Gas concentration can be determind by measuring the output voltage.

Where should I place a natural gas alarm?

Natural gas is lighter than air and tends to float updwards. The detector should therefore be placed on a wall not more than 0.3 meters from the ceiling and at a horizontal distance as 2~4m from the cooker or gas source.

Such location should be avoided:

Near the windows or passage with strong wind;
Humid areas;
Easy polluted or high tem environment near Oven;
Covered by other things.


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