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How Carbon Monoxide Detectors Work

August 20, 2023

Mammoth Takeaways:

  • Carbon Monoxide Detector Types: There are three main types of CO detectors—electrochemical, biometric, and metal oxide semiconductor—each using different technologies to detect dangerous CO levels.
  • Professional Installation: Installing carbon monoxide detectors professionally ensures compliance with local regulations and optimal placement to avoid false alarms.
  • Integration with Fire Systems: CO detectors can be integrated into fire alarm systems, providing added protection by detecting both CO and slow-starting fires.

Carbon monoxide is an invisible, odorless, tasteless gas that can cause serious health problems and death.

So, how do you protect yourself and your employees against a threat you can’t see, smell, or taste?

The answer is carbon monoxide detectors, which are equipped with the technology and sensors to identify what we can’t.

These small devices play a crucial role in ensuring the safety of your building and its occupants.

Let’s examine their functionality and why they are indispensable in any business.

Types of Carbon Monoxide Detectors

Carbon Monoxide Electrochemical Sensor

Electrochemical

One of the most popular options, electrochemical detectors, uses electrodes and a chemical solution. When CO enters the detector, it reacts with the chemical, creating a small electrical current. The detector measures this current, and if it reaches a certain threshold, the alarm goes off. These detectors are praised for their accuracy and fast response time.

Carbon Monoxide Colorimetric Detector

Biometric

Biometric detectors use a gel that changes color in response to carbon monoxide. A sensor monitors the gel’s color, triggering the alarm when a dangerous CO level is detected. These detectors are known for their reliability over time, making them a solid choice for homes or offices.

Carbon Monoxide metal oxide sensor

Metal Oxide Semiconductor

This type of detector uses a sensor composed of a silica chip with a thin film of metal oxide. When CO contacts the sensor, its electrical resistance lowers, which activates the alarm. Metal oxide detectors are known for their long lifespan and are often used in more industrial or commercial settings.

How Carbon Monoxide Detectors Function

The purpose of a carbon monoxide detector is to guard against the presence of CO in the air, which, when inhaled in high concentrations or for long periods of time, can be fatal.

Sensing Mechanisms

A few different technologies have been implemented to detect carbon monoxide. We discussed them briefly above: biometric, electrochemical, and metal oxide semiconductors. Each of these methods uses an electrical or chemical reaction to alert the device to CO concentrations.

Alarm Activation Process

Once the sensor has registered a positive result for carbon monoxide, it signals the alarm device. This typically triggers an audible alarm and/or a flashing light to alert nearby occupants or a connected system of the event.

Calibration and Responsiveness

CO detectors are created and calibrated to activate at certain levels of carbon monoxide in the air in parts per million (PPM). Different makes and models may provide different levels of sensitivity. These sensitivity levels are to cater to a variety of residential, commercial, and industrial settings. Speak with a professional about the recommended type for your specific industry needs.

Importance of Installing Carbon Monoxide Detectors by Professionals

Protecting Health and Safety

Professional installers know the ins and outs of the equipment that they place into your business. This means that they can find the brand and model that has the capabilities to provide optimum security for your building. They also ensure that equipment is put in properly and, if needed, integrated with your existing equipment.

Legal Requirements and Standards

The National Fire Protection Association (NFPA) creates and maintains strict policies around the manufacture, installation, and operation of carbon monoxide detectors. These regulations aim to provide the best protection against the threat of carbon monoxide poisoning. Trained technicians are educated about the laws, which means they can guarantee that your building complies with all local and national regulations.

Awareness and Prevention

Being aware of the health hazards surrounding unmonitored carbon monoxide goes a long way toward protecting yourself and your employees. Professionals are happy to inform and train on how to best use CO detectors to avoid the perils of being poisoned by this invisible gas.

Optimal Installation Practices

Recommended Locations

Carbon monoxide detectors should be placed near any areas of sleep or rest in your business. For example, if you run a hotel or apartment complex, CO detectors need to be placed in each bedroom. In other commercial applications, it is recommended to place detectors near common sources of CO, such as loading bays, in basements near heating equipment, or in areas where combustible materials are being burned.

Note: Do not place detectors closer than 10-15 feet to gas-burning appliances to avoid false alarms or damage to the unit.

Height and Placement Considerations

When installing CO detectors, they should be placed either near baseboard plugs or at eye level. The alarm should be unobstructed and easily accessible in case of an event. Avoid placing near windows, drafty areas, or places with high humidity, as these can affect the sensor and result in false alarms.

How to Avoid False Alarms

False alarms can be frustrating, but proper placement helps reduce their occurrence. Avoid installing detectors in kitchens or garages, where normal exhaust or small amounts of CO can trigger unnecessary alerts. Instead, professionals will place them where they are most effective while also reducing the risk of false alarms.

Integrating Carbon Monoxide Detectors

One benefit of carbon monoxide detectors is the ability to be integrated into fire alarm systems. Incorporate these units into new or existing systems for added protection from fire or health risks. Since smoke contains CO, it not only protects against potential leaks or buildup of gas but also slows the start of fires.

What to Look For in a Professional Carbon Monoxide Installer

It’s important to have an installer you can trust when it comes to putting carbon monoxide detectors in your business. You need to have peace of mind that your building and employees are protected. When looking for a company to work with, look at the following:

  • Experience: How long has the company been serving the community or area? What type of training do they have, and how does it match your needs? Research their certifications or previous completed jobs since they were established.
  • Reviews: Looking at online reviews, testimonials, or speaking with prior customers can offer good insight into the company’s work. Be sure to evaluate the good and the bad for a clear picture of the company. If reviews seem disingenuous or heavily skewed on one source, validate it against other places where reviews are left.
  • Customer Service: Speaking with the company directly can often provide great insight into their work ethic and capabilities. Reach out to their customer service to ask questions and review their friendliness and knowledge.

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Mammoth Conclusion

Protect your business from the dangers of carbon monoxide by consulting with our knowledgeable team. We’ll guide you in selecting the best detectors and ensure they’re expertly installed.

Schedule your free consultation with Mammoth Security today for peace of mind!

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FAQ

Carbon monoxide (CO) is an invisible, odorless, tasteless gas that can be deadly when inhaled in high concentrations or over a prolonged period. It interferes with the body’s ability to absorb oxygen, leading to serious health issues, including death.

It’s generally recommended to test them monthly and replace them every five to seven years, depending on the manufacturer’s instructions.

No, a smoke detector cannot be used as a carbon monoxide detector. The two devices serve different purposes—smoke detectors sense smoke from fires, while carbon monoxide detectors are specifically designed to detect CO gas.

When carbon monoxide levels are detected, the alarm will sound and/or flash. Regular testing, as recommended by the manufacturer, can also confirm functionality. If unsure, contact a professional to inspect and test the device.

Yes, commercial buildings and apartment complexes have specific requirements for CO detector placement. Installing detectors near sleeping areas in hotels or apartment complexes and in areas with common CO sources like loading bays or near heating equipment is recommended. Compliance with local regulations is also necessary.

ABOUT THE AUTHOR

The Mammoth Security Team


The Mammoth Security Team brings over a decade of expertise in delivering tailored security solutions, including cameras, access control systems, data wiring, and alarms. With a mission to protect businesses as their own, they combine advanced technology, personalized service, and seamless integration. Recognized on Inc. Magazine's 2024 Regionals list, Mammoth Security provides corporate-level expertise with a local company feel, serving diverse industries with excellence.

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