Sensors for Breweries & Gas Monitoring

CO2 Towers

Why Analox?

Analox is a trusted, industry-leading provider of gas-sensing equipment for breweries and beverage manufacturers around the world. When you think of gas safety, Analox should be your first port of call. We provide our customers with the best in class solutions to keep both staff members and customers safe from dangerous gas leaks, in particular, carbon dioxide (CO2) and nitrogen (N).

We have worked closely with, and taken on board the feedback from our customers and partners across the globe, to help develop a range of reliable, trustworthy gas safety monitors for the brewery industry.

When it comes to process monitoring, we know that each brewery has its own unique requirements. From needing to monitor gas levels in multiple rooms using a single system, to needing personal CO2 monitors which can monitor CO2 levels when moving between sites to everything in between, we can confidently offer a wide variety of products that can be customized to your individual needs.

We’ve been supporting breweries since 1992 and we’ve seen a huge increase in demand for our products over the last few years thanks to the popularity of craft beer. Our products are used by small microbreweries all over the world, and we also supply large multinational companies too.

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food and beverage gas safety

Our Products

Working alongside the beverage industry for 30 years, we understand the pains of this ever changing industry. We have therefore made sure that all our gas monitoring systems are easy to install, easy to use, and provide you with accurate data that will keep staff and customers safe from potentially dangerous gas leaks so that you can continue doing what you do best.

Our team has extensive experience in working with a variety of different processes and industries including wineries, breweries, distilleries and soft drink manufacturers, so, why not put us to the test!

We pride ourselves on our ability to offer solutions that are both efficient and cost effective. We work with organizations of all sizes and provide each and every one with reliable gas safety equipment, allowing them to focus more on the day to day tasks of running a brewery.

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CO2 Awareness and Risks 

CO2 gas leaks in breweries can be extremely dangerous. Worker safety and brewery gas detection should be considered when working with CO2 in a brewery. CO2 has the potential to build up in a cellar very easily if, for example, there is a leak in the system. The effects of this can be fatal.

CO2 is a colorless, odorless gas that can be used as a carbonation agent in beer production. It’s also used to keep the temperature of fermentation tanks at an ideal range. The fact that you can’t see or smell CO2 makes it an extremely dangerous gas and highlights the importance and need for having efficient gas detection equipment on site.

Exposure to CO2 can produce varied health effects depending on the concentration of the gas and the length of time you are exposed to it. Some of the first signs to look out for are headaches, dizziness, restlessness, a tingling or pins or needles feeling. If the CO2 levels or length of exposure increases, be on the lookout for difficulty breathing, sweating, tiredness, increased heart rate.

The guide below shows how different levels of CO2 exposure can give a range of physical effects. This information may help you to understand the importance of monitoring CO2 levels:

  • 400 ppm: Average outdoor air level
  • 400–1,000 ppm: Typical level found in occupied spaces with good air circulation
  • 1,000–2,000 ppm: Level associated with complaints of drowsiness and poor air
  • 2,000–5,000 ppm: Level associated with headaches, sleepiness, and stagnant, stale, stuffy air. Poor concentration, loss of attention, increased heart rate and slight nausea may also be present
  • 5,000 ppm: Indicates unusual air conditions where high levels of other gasses could also be present. Toxicity or oxygen deprivation could occur. This is the permissible exposure limit for daily workplace exposures
  • 40,000 ppm: Level is immediately harmful due to oxygen deprivation

Using an Oxygen Monitor to Protect Against Nitrogen Leaks

If you use nitrogen gas to create nitro beers then you will need to use an OXYGEN (O2) monitor to protect yourself and your staff against any nitrogen leaks or build up.

We use O2 monitors because nitrogen is an asphyxiant, meaning that it displaces air which reduces the level of O2 in the atmosphere. It is the reduction in O2 that causes the harm, not the level of nitrogen.

Just like CO2, nitrogen is also odorless and colorless, so we cannot naturally detect its presence. Nitrogen is used for dispensing beverages in the beverage industry and gas cylinders are usually stored in enclosed cellars or cool-rooms. This is the perfect space for dangerous gas leaks to build-up. When a worker enters these areas, they can be quickly overcome before they realize the dangers.

Lack of oxygen can produce varied health effects depending on the levels of the gas. Some of the first signs to look out for are wanting to take deeper breaths, coordination slowly getting worse, attention and thinking clearly starts to require more effort. If the levels dip too low the effects range from nausea, vomiting, shortness of breath, headache, dizziness and lack of coordination.

The guide below shows how different levels of O2 can give varying physical effects. This information should help you to understand the importance of monitoring O2 levels:

  • 6000 ppm: Convulsions occur and breathing may stop
  • 8000 ppm: Collapse and unconsciousness occurs
  • 10,000 ppm: Nausea and vomiting, finding it hard to move quickly
  • 12,000–15,000 ppm: Shortness of breath, headache, dizziness, quickened pulse, tire quickly when moving, coordination for skilled movement is lost
  • 17,000 ppm: Take in deeper breaths, coordination starts to get worse, attention and thinking clearly requires more effort
  • 18,000 ppm: Night vision begins to be impared
  • 20,000-21,000 ppm: Normal levels


We have tried to answer a few FAQs with the hope of educating you and helping you to keep your brewery a safer place to operate…

You should place your CO2 monitors wherever CO2 is being used or stored. They should also be mounted 12” off the floor, this is because CO2 that leaks from a gas cylinder is denser and cooler than the ambient air and will first gather at floor level, then, depending on the volume of the room and amount that of CO2 that is leaking, it could rise and fill the enclosed space. Having a CO2 monitor at that height means that a leak alert will go off well before the CO2 has risen to working head height, allowing you to resolve the CO2 leak.

Just like CO2, O2 monitors should also be placed wherever nitrogen is being used or stored. However, unlike CO2 monitoring, the sensor unit should be placed at working head height. Nitrogen has  similar density to air and so it will start to fill up the room from the height of the gas cylinder. Having the monitor at the average working head height, means workers will be alerted to the change in O2 level before it becomes serious.

We recommend that the alarm unit should be located at the entrances to the danger area where visibility is not obscured. Refer to your own risk assessment for the best location.


By your side, 24/7/365

Should you need a helping hand at any time of the day, in any location around the world, we are ALWAYS available! We have a dedicated emergency line that has been set up for that exact reason. Because you are dealing with potentially life threatening gasses and immediate/early actions will increase the chance of survival, we provide a 24/7 helpline that will put you through to one of our specialist team members, no matter where you are or what time it is.

For more information on anything to do with gas monitoring in Breweries, please get in touch:

+44 (0)1642 711 400

Check out our range of gas monitors that have been specifically designed for use in the beverage industry:

Carbon Dioxide Gas Monitoring Solutions

Analox offers the following choices of wall mountable or portable gas monitors for measuring carbon dioxide gas levels:

If you need a simple, ready to install and cost-effective gas safety monitor – we’ve got you covered.

The Ax60+ is easy to install and already programmed for your local regulations.

The DOM can be retro fitted to any existing Ax60+ installations and provides real-time monitoring of the Ax60+ and communicates with customers remote systems such as a Building Management System (BMS).

A wall mountable carbon dioxide (CO2) monitor and alarm.

A single point wall mounted safety monitor for carbon dioxide (CO2) enrichment. Typically found in restaurants, pubs, bars, fast food establishments, breweries, hospitality venues, laboratories and medical centers.

Due to American legislation, this is not suitable for the American market, please look at the Ax60+.

A portable, personal safety monitor for both carbon dioxide (CO2) enrichment and oxygen (O2) enrichment and depletion.

A portable, personal safety monitor for carbon dioxide (CO2) enrichment.

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