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personal CO2 alarms
Analox's personal CO2 Alarm, the CO2BUDDY.

Guide to using Personal CO2 Alarms


Personal CO2 safety Alarms – what are they?

If you work in an environment where you could be exposed to increased levels of CO2 you need to consider investing in personal CO2 alarms. A personal CO2 alarm is a lightweight device with CO2 sensor and alarm method to notify the user of a potential leak or dangerous levels of CO2.

There are many areas across breweries, bars, restaurants and cellars in the beverage industry, and walk-in coolers, walk-in freezers or commercial refrigerators where a leak can cause carbon dioxide buildup in a confined space-  this is where CO2 is most dangerous.

Why would I need a personal CO2 Safety Alarm?

Carbon dioxide exists naturally in the atmosphere, but if an increase of just 0.5% occurs preventative measures need to be taken. When CO2 rises, and keeps on rising, workers will be affected and could start to become fatigued, feel dizzy or nauseous. If the levels continue to  rise more serious effects will be felt including disorientation, fainting to the floor and even death in the most severe cases.

Personal CO2 Safety Alarms work in a similar way to fixed, or wall-mounted systems, alerting those in the area to a potential issue with increased levels of CO2. However, a personal alarm will continuously monitor that person wherever they go, even if they move to a different site.

What are the benefits of having one?

For beverage gas delivery drivers it’s often difficult to know there will be a fixed gas detection monitoring system in place and therefore wearing a personal CO2 safety alarm will protect them wherever they are working.

Personal CO2 safety alarms should alert the user to dangerous levels of CO2 so they can act accordingly. To ensure the user has been notified the unit should have a range of warning methods including:

  • Audible alarm
  • Visual indicators
  • Vibration 


Personal CO2 Alarms should be small and light so they don’t feel like they are a burden on the employee who will have to carry it around with them on a day to day basis. 


What else should you consider?

Fixed CO2 monitors should always be a consideration when thinking about protecting a facility and the people who work in that area. A fixed unit will alert the whole building when there is an issue, whereas a personal device is transportable with the person wearing it.

Although having a gas detection solution is not a legal requirement in most countries, the consequences of a leak can be deadly. Protecting staff and customers should be your primary concern, but a leak of CO2 can also cause significant costs to the business, including loss of revenue due to shutdown, insurance costs or fines.

Confined Space Regulations including OSHA and Workplace Safety Regulations like EH40 provide guidance on what is a hazardous environment and what’s needed to comply before a possible inspection.


What’s next?

Please get in touch with us to discuss your requirements for protecting your business and colleagues from dangerous CO2 leaks. We have several solutions including fixed and personal CO2 alarms to ensure you’re safe and meet regulations for your specific location. Whether that’s a brewery, bar, walk-in cooler or brite tank, grain silo or mash tun, our systems are designed to be flexible to meet your specific alarm set-points, providing compliance with all regulations worldwide.

Get in touch an expert today.


UK  +44(0)1642 711400

US  (877) SAFE AIR  

US  (714) 891 4478 

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Posted in Dispense Gas, Gas Dangers, Hospitality, Laboratory, Mining

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