Carbon Monoxide Detectors: 5 Fast Facts

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Fact #1. Carbon monoxide, even at lethal levels, is undetectable to the human senses. So, it's a very good idea to employ a device that can detect it for you. When there's a fire in the home, you can usually smell or see the smoke just as quickly as your smoke detector can. Carbon monoxide detectors have to be sensitive enough to detect a much less visible agent, and to do so without creating too many false alarms.
Fact #2. Carbon monoxide's propensity to interact with other chemicals and substances can be used to protect you from it. Detectors usually function in one of three ways. They either utilize silica, chemical solutions, or a reactive gel to register the presence of gas. Units that use gel also often employ photo sensors akin to those found in photoelectric fire alarms. These sensors can register the change in gel color.
Fact #3. Detectors that employ chemical solutions and silica-based detectors both rely on changes to electrical resistance as their triggers. When carbon monoxide interacts with silica, it alters the substance's electrical impedance. This is monitored by the device's circuit board. Large enough changes trigger the alarm.
Fact #4. Carbon monoxide alarms are either plug-in or battery-operated. Detectors that have to be plugged in are dependent on the placement of the outlets in your home. They often also have batteries inside them to act as backups should the power fail. You should routinely test these batteries to make sure you'll remain safe.
Fact #5. Make sure you and your family have an escape plan in case of a fire or gas leak. This may necessitate the purchase of an escape ladder, as well as the development of a detailed evacuation plan. It may take a little up-front cost and planning, but you'll be grateful if you ever need to use the tools and tactics you've acquired.